20.The last bus had gone and he home on foot.
A.had no choice but go
B.had no choice but to go
C.had nothing to do but to go
D.had no choice but going
19.We must plants the cool.
A.protect;from B.prevent;from
C.stop;from D.keep;from
18.The students are busy their homework.
A.do B.doing C.did D.done
17. time goes by,we learn more and more knowledge.
A.With B.When C.Since D.As
16. by the snake,the girl stood still there.
A.Frightening B.To frighten
C.Frightened D.Frighten
15.All the students were studying in class Tom;he was playing football on the playground.
A.except B.besides
C.except for D.except on
14.A man unusual foreign clothes went into the lady’s living room.
A.to B.in C.on D.for
13.The doctor wrote him a prescription some medicine.
12.He quited cigars after he married.
A.smoke B.to smoke C.smoking D.smoked
11.They each other for 5 years.
A.have been in love with B.have fallen in love with
C.are in love with D.fell in love with
