Personal computers ______ in 1976. It has changed the whole world.
#44711
A
have invented
B
were invented
C
is invented
D
invented
推荐题目
Liu Xiang is well known all over the world, he ____ to appear in films.
#44957
A
asks
B
is asked
C
asked
D
will ask
—It’s difficult to get to the other side of the river.—I think a bridge over the river.
#44615
A
should be built
B
should build
C
will build
D
has built
--- Where is Jim?--- He _________ to the museum. He hasn’t come back.
#44509
A
has been
B
had gone
C
has gone
D
had been
You have to be 18 years before you _________ to drive a car.
#44890
A
are allowed
B
are
C
allowed
D
allow
The words that we should pay attention to ___________ on the blackboard.
#44881
A
being written
B
are written
C
is writing
D
writing