I won’t tell the student the answer to the math problem until he ____on it for more than an hour.
#99288
A
has been working
B
will have worked
C
will have been working
D
had worked
推荐题目
．—That must have been a long trip.—Yeah, it________us a whole week to get there.
#99182
A
takes
B
has taken
C
took
D
was taking
Mike his wedding for a whole month and hopefully everything will be ready tomorrow.
#103203
A
prepares
B
is preparing
C
has prepared
D
has been preparing
——Tommy is plannning to buy a car.——I know. By next month, he ___enough for a used one.
#102661
A
saves
B
saved
C
will save
D
will have saved
The project _______ a success as the income of the company increases every year.
#102820
A
is proved
B
had proved
C
has proved
D
has been proved