—Is there any possible way to help them get rid of such a bad habit?—To tell the truth, it’s very hard. But we ________ on this problem, trying to improve the situation .
#101218
A
worked
B
had worked
C
are working
D
had been working
推荐题目
(2013·南京金陵中学模拟)I failed again，but my parents encouraged me and told me that failure________the mother of success.
#99154
A
was
B
is
C
be
D
been
–Hi, Tom, You look tired. --Yes, I _____________ the room all the afternoon.
#102380
A
painted
B
had painted
C
have painted
D
have been painting
The surface of the table ______ smooth enough．
#102806
A
hash’t felt
B
isn’t feeling
C
doesn’t feel
D
isn’t felt
Although many families got separated,people still each other.
#103940
A
keep in touch with
B
kept in touch with
C
get in touch with
D
came into contact with