That-Clauses and Whether-Clauses as Complements —
Forms in Context.

Question 1

There is no evidence yet, but the manager believes _____ the new timetable will reduce delays.

Options: whether, that, if

Question 2

The organiser says, “I know whether the speaker has accepted, but the answer is confidential.” This means the organiser _____.

Options: knows that the speaker has accepted, does not yet know the answer, knows the answer but is keeping it private

Question 3

Could you find out whether _____ before we book our tickets?

Options: the museum opens on Mondays, does the museum open on Mondays, opens the museum on Mondays

Question 4

Ben has ignored three invitations. I wonder whether _____ to join the group.

Options: does he not want, he does not want, does not he want

Question 5

The organiser is pleased _____ everyone can attend, but uncertain _____ the room is large enough.

Options: whether, if, that, what

Question 6

In the report, the claim _____ the medicine works is separate from the question _____ it is safe for children.

Options: whether, that, if, what

Question 7

Our problem is _____ the last bus has already left. The question now is _____ we should walk or call a taxi.

Options: that, whether, if, what

Question 8

A supervisor says, “Check that each parcel has a label.” By choosing that rather than whether, the supervisor asks you to _____.

Options: find out if every parcel has a label or not, ask what information the labels contain, make sure every parcel has a label

Question 9

Complete these conversational versions without that: “Mia said _____.” “I am glad _____.”

Options: she had found her keys, had she found her keys, whether she had found her keys, did you enjoy the meal, you enjoyed the meal, whether you enjoyed the meal

Question 10

Keep the open yes/no question in this shorter version of “I wonder whether the library is busy”: “I wonder _____.”

Options: it is busy, that it is busy, whether it is busy

Question 11

Choose the pair whose two words both fit: “We do not know _____ the restaurant takes bookings.”

Options: whether / if, that / whether, if / what

Question 12

We talked about _____ the service should continue. We also talked about _____ passenger numbers had fallen.

Options: if, that, whether, the fact that, the fact whether

Question 13

The organiser needs an answer: “Please tell me _____ or not you need a parking space.”

Options: whether, if, that

Question 14

Choose the pair whose two words both fit: “I have not asked _____ the hotel provides breakfast or not.”

Options: that / if, whether / if, whether / what

Question 15

We discussed _____ we should hire a van, but we still have not decided _____ to collect the furniture ourselves or pay for delivery.

Options: if, whether, that