Nothing but grass and trees ____ the hill. 
#86172
A
covers 
B
cover 
C
covering 
D
iscovering
推荐题目
A library with seven thousand books _____ to the area as a gift.
#86223
A
is offered
B
have offered
C
are offered
D
has offered
.The young often___the old in our town.
#86263
A
helps
B
wants to help
C
help
D
helping