The Russian rocket designer has died. For many years, he ______ as an important assistant to the father of Soviet space program.
#101576
A
serves
B
was serving
C
served
D
has served
推荐题目
Tim ____since he lost his job three weeks ago.
#101002
A
had been unemployed
B
was unemployed
C
has been unemployed
D
has unemployed
- Why do you look so worried?- My MacBook Pro broke down and my paper______unfinished since.
#100291
A
was left
B
has left
C
left
D
has been left
Look at the timetable (时刻表). Hurry up! Flight 4026 _______ off at 18:20.
#101479
A
takes
B
took
C
will be taken
D
has taken
—Why don’t we choose that road to save time?—The bridge to it _____________.
#100093
A
has repaired
B
is repaired
C
is being repaired
D
will be repaired
——Have you found the house for me, Ms Mary?——Yes, but I will tell you what trouble I had ______ your house on the way I came here.
#101762
A
find
B
found
C
finding
D
founded