They will be back home      
#104893
A
a week later
B
after a week
C
in a week
D
a week
推荐题目
The book __, it’s a best-seller. 
#103594
A
sell well
B
is sold well
C
has sold well
D
sells well
Stop! You can never touch this machine when it ________, it is very dangerous. 
#102729
A
has been operated
B
will be operated
C
is operated
D
is being operated
—Why is the house in a mess?—I         it for Christmas since three days ago.
#100434
A
cleaned
B
cleans
C
have cleaned
D
have been cleaning
Mr. Smith, I should tell you this is the fifth time you ______ me for my twin sister.
#100248
A
have mistaken
B
are mistaking
C
mistook
D
are mistaken