Please _______ us in the discussion. — I’d like to, but I’m _______ busy at present.

When did Tom come to Qingdao—It was in July，2006 and he atrip in China with his parents at thattime.

You _____ pay too much attention to your assignment, for it is ever so important. [ ]

They were surrounded by the enemy, but they ________at last from the village.

I have to study ____ my English test ______ Wednesday morning.