--When _____ the abacus _____? -- In the sixth century by the Chinese people.
#44867
A
is, invented
B
did, invent
C
was, invented
D
does, invent
推荐题目
This famous tower has a long history. It ______ more than 300 years ago.
#44667
A
builds
B
built
C
is built
D
was built
Can you guess if they ________ to play basketball with us ? I think they’ll come if they _______ free .
#44706
A
come, are
B
will come , will be
C
will come , are
D
come , will be
—When _________ the car _______ ?—Sorry. I don’t know.
#44961
A
does; invent
B
did; invent
C
was; invent
D
was; inventing
----Smoking should ____________ in school. ----I agree. It’s bad for our health.
#44526
A
be allowed
B
not allow
C
allow
D
not be allowed
----How many of your friends ________ to the party last weekend ? ----All of my friends。
#44793
A
invite
B
are invited
C
were invited
D
invited