Before the first nonstop flight made in 1949,it______necessary for all planes to land for refueling.
#104556
A
would be
B
has been
C
had been
D
would have been
推荐题目
By this time next summer, you ___ a high paying job. I, on the other hand , will still be studying for my degree.
#100309
A
will have found
B
will find
C
have found
D
will be finding
---Has your father returned from Africa yet? ---Yes, but he ____ here for only three days before his company sent him to Australia．
#103213
A
was
B
has been
C
will be
D
would be
—What about your self-drive trip yesterday?—Tiring! The road is being widened, and we ______ a rough ride.
#100596
A
had
B
have
C
would have
D
have had
--- Hi, Tracy, you look tired. --- I’m very tired. I ____ the living room all day.
#102531
A
painted
B
had painted
C
am painting
D
have been painting
This January will be very precious for us by which time we______ reviewing Senior Book I.
#104234
A
will finish
B
will have finished
C
have finished
D
will be finished