They __________ known about the event if they had checked ...

[ Modal Verbs ]

They __________ known about the event if they had checked their emails.

A. must have known

B. could have know

C. could have known

D. must have knew

Select your answer:
A B C D E

Other quiz:

Vocabulary and Grammar › View

Wearing a mask while walking outside helps protect against _________.

A. road dust

B. underground system

C. congested road

D. itchy eyes

Present Tenses › View

. Choose the correct passive voice form: The chef cooked a delicious meal.

A. The chef cooks a delicious meal.

B. A delicious meal is cooked by the chef.

C. The chef was cooking a delicious meal.

D. A delicious meal was cooked by the chef.

Conjunctions › View

Do you want to eat pasta ___________ rice for dinner?

A. and

B. but

C. because

D. or

Vocabulary › View

He is a faithful friend, and always support me when things go wrong

A. Ambitious

B. Care

C. Loyal

D. Sociable