I was just going to cut my rose bushes but someone _______ it. Was it you?
| A．has done | B．had done | C．would do | D．was doing |
We should protect the environment, for plenty of fresh air ________ to good health.
| A．adjust | B．contributes | C．distributes | D．attributes |
“If _________ much time, I will teach you how to ________ the clothing store,” the boss said to me.
| A．given; run | B．given; control | C．giving; run | D．giving; control |
_________, I always feel I want a few more days.
| A．However long is a vacation | B．However long a vacation is |
| C．However is a vacation long | D．However a vacation is long |
--- Bake is intelligent and experienced.
--- That is ________ his advantages lie in applying the post.
| A．what | B．how | C．where | D．why |
During _________ 3-day conference, global warming became _________ major concern of all the representatives.
| A．the; a | B．a; the | C．the; \ | D．a; \ |