This book ______ Tom’s father’s, because his name is on the book. 
#88110
A
maybe
B
may be
C
must be
D
must
推荐题目
--I once got lost during my first visit to Beijing. -- Oh, did you? You ____ me as your guide. 
#88052
A
might have asked
B
could ask
C
would have asked
D
would ask
— I’ll tell Mary about her new job tomorrow. — You ______ her last week. 
#89264
A
ought to tell
B
would have told
C
must tell
D
should have told
Had I known about this computer program, a huge amount of time and energy       .
#87058
A
would have been saved
B
had been saved
C
will be saved
D
was saved