--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
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
—Are you going to Mary’s birthday party, Jack?—I’d love to, but I _______ to come to her party.
#44373
A
was told
B
told
C
wasn’t told
D
didn’t tell
--- It’s difficult for the village children to cross the river for school. --- I think a bridge ________ over the river.
#45065
A
should be built
B
is being built
C
has been built
D
was built
---Excuse me. I’m looking for Be the Best of Yourself.---Sorry. The book you ask for ______ out.
#44618
A
is selling
B
is sold
C
was selling
D
will be sold
The television ________. It doesn’t work now.
#44544
A
must repair
B
was repairing
C
must be repaired
D
has repaired