I was out of town at the time, so I don’t know exactly how it _______.
A. was happening B. happened C. happens D. has happened
So sudden ________ that the enemy had no time to escape.
A. did the attack B. the attack did C. was the attack D. the attack was
Occasions are quite rare ____ I have the time to spend a day with my kids.
A. who B. which C. why D. when
_____ was most important to her, she told me, was her family.
A. It B. This C. What D. As
He didn’t make ______clear when and where the meeting would be held?
A. this B. that C. it D. these
-Is Jack on duty today?
-It ____ be him. It’s his turn tomorrow.
A. mustn’t B. won’t C. can’t D. needn’t