.If _____,the experiment will be successful.
#4718
A
carefully doing
B
it done carefully
C
carefully done
D
doing carefully
推荐题目
.Mary has _________ 18-year-old daughter who has ________ gift for singing.
#4773
A
a; a
B
an; the
C
an; a
D
the; a
But for their help, we ____ the program in time．
#4795
A
can not finish
B
will not finish
C
had not finished
D
could not have finished
——Hi, Steve, you look tired.——I am tired. I ______ the living room all the afternoon.
#4727
A
painted
B
had painted
C
have been painting
D
have painted