Must and Can't - Find and Fix

One word in each sentence is wrong. Tap it, then choose the correction.

Practice 5 of 5

0 / 12 sentences corrected0%

Question 1

Two oven timers read DONE, so the meals can't be ready.

Question 2

The live log shows fresh keystrokes, so Priya must be type inside the lab.

Question 3

Iris must have went into the secure room; her fingerprint is in the log.

Question 4

The live feed shows Leila at the easel, so she must have painting now.

Question 5

Ana mustn't be at home; the live camera shows her at work.

Question 6

The stage is empty, so the actors can't be rehearse there.

Question 7

The courier can't has removed the documents; the parcel is still sealed.

Question 8

At noon, they were at their desks, so they can't have been drive.

Question 9

The sign says NO ENTRY, so visitors mustn't entering this area.

Question 10

Do you think Dr Lee mustn't be inside? The live camera shows her there.

Question 11

Can the gallery really been open at midnight? It normally closes at five.

Question 12

Could the night team have took the missing office key?

Practise Must and Can't - Find and Fix with this interactive error-correction exercise of 12 questions. Tap the word that is wrong in each sentence and choose its correction, then submit to check your answers and get instant feedback on every sentence.

Practising grammar in real sentences — rather than memorising rules in isolation — is one of the most effective ways to make a structure stick. You can retry as many times as you like to build accuracy and confidence using Must and Can't - Find and Fix in everyday English.

Looking for more practice? See all exercises for this lesson.