—ou___________ stop me．
—Even if you __________it, I won't allow you to swim across the river．
| A．mustn't; dare not do | B．may ; dare not do |
| C．can; dare to do | D．needn't; dare do |
—I heard the peasants herevery poor in the past.
—Yes,but theregreat changes in the past few years.
| A．have been;have been | B．have been;were |
| C．were;have been | D．were;were |
—Has Billy finished his homework today?
—I have no idea.Heit this morning.
| A．would do | B．was doing | C．has done | D．had done |
These wild flowers are so special I would do _______ I can to save them.
| A．whatever | B．that | C．which | D．whichever |
Parents are taught to understand _______ important education is to their children’s future.
| A．that | B．how | C．such | D．so |
We cannot figure out _______ quite a number of insects, birds, and animals are dying out.
| A．that | B．as | C．why | D．when |