From time to time, our biology teacher tells us the only way he thinks of __________ experiments well is to practice.
A.do B.to do C.doing D.did
The president said if terrorists declared war __________ the United States, war would be what they got.
A.against B.on C.to D.for
The child was found __________ the streets alone.
A.wandered B.to wander C.wander D.wandering
In modern society, punctuality is a necessary __________.
A.variation B.virtue C.version D.vision
As they’re handmade, each one __________ slightly in shape.
A.various B.varied C.varies D.variety
He used to _________ in the sun, but now he is used to __________ in the library.
A.read; read B.reading; reading C.reading; read D.read; reading
