GWB1+U9 Modal verbs speculation deduction

Sarah (a)   Toby’s sister because she looks totally different.

• must be

• might be

• can’t be

• could be

The national anthem (a)   "Fratelli d’Italia" because it’s Italy’s anthem.

• must be

• might not be

• can’t be

• could be

Joe (a)   soon, but his train is often delayed.

• must arrive

• might arrive

• can’t arrive

• could arrive

The prime minister (a)   last week, but the statement is unclear.

• must resign

• might have resigned

• can’t resign

• could resign

The king (a)   the village, but no records exist.

• must visit

• might have visited

• can’t have visited

• could visit

The politician (a)   during the debate, but no one proved it.

• must lie

• might have lied

• can’t lie

• could lie

The queen (a)   about the conspiracy, but no evidence was found.

• must know

• might have known

• can’t know

• could know

The flag (a)   last year, but no one noticed.

• must change

• might have changed

• can’t change

• could change

The election results (a)   , but there’s no evidence.

• must be rigged

• might have been rigged

• can’t be rigged

• could rig

The president (a)   the law yesterday, but the documents are missing.

• must sign

• might have signed

• can’t sign

• could sign