The terrible weather ________ our difficulty in building the road. 
#64070
A
added
B
added up
C
added to
D
added up to
推荐题目
 Since then the number of people taking driving lessons ____20.
#64592
A
has increased to
B
increases by
C
has increased by
D
have increased by
I asked the boss for a month’s holiday and, _____ it or not, he agreed.
#81725
A
believe
B
to believe
C
believing
D
believed