---John, why are you so upset? ---I my cell phone all morning but it is nowhere to be found.
#101303
A
am looking for
B
have looked for
C
have been looking for
D
had looked for
推荐题目
Great changes___ have taken place _____ in the city, and a lot of factories________.
#100428
A
have been taken place; have been set up
B
have taken place; have been set up
C
have taken place; have set up
D
were taken place; were set up
Social attention should be paid our earth from .
#102039
A
to prevent; being polluted
B
to preventing; polluted
C
to prevent; polluting
D
to preventing; being polluted
Is this the first time that you _____ here?
#103342
A
visit
B
are visiting
C
had visited
D
have visited
Don’t telephone me at 8 a.m. tomorrow — I ________ a meeting.
#102183
A
am having
B
will be having
C
am about to have
D
have had
---Where is mother? ---She is in the kitchen. She ___ the dinner for the party the whole afternoon.
#103022
A
is preparing
B
was preparing
C
has preparing
D
has been preparing