Speculation

They _ have arrived on time ( maybe )

• Could

• Must

• Might

• Must not

You must have been _ all day . You look sleepy ( STUDY)

Mark _ have been at that party . I didn't see him ( It's not possible )

• must not

• might not

• couldn't

• must

Which two modal verbs are used for speculation ?

• Must

• Should

• Will

• Might

You _ have forgotten their anniversary ( Advice )

• Must not

• Might not

• Could not

• Should not

I think they should have _ to their teacher ( Listen )

She _ have taken my keys ( You're certain )

• could

• must

• might

• should

They should have _ that letter ( Choose two ideas )

• sent

• took

• received

• buy

You look awful . You must have been _ all night

• to exercising

• exercise

• exercised

• exercising