Bob would have helped us yesterday, but he ________.
#99049
A
was busy
B
is busy
C
had been busy
D
will be busy
推荐题目
The order is that all the goods _____ to the city on time.
#102609
A
ship
B
shipped
C
be shipped
D
are shipped
It ______ that Tokyo will be the host city for the 2020 Summer Olympic Games.
#100241
A
will report
B
will be reported
C
has reported
D
has been reported
Two building workers got seriously wounded when the stadium _______. 
#99780
A
was built
B
was being built
C
built
D
is being built
Three fourths of the homework _______ today.
#103523
A
has finished
B
has been finished
C
have finished
D
have been finished