It is said that potato chips ____________ by mistake about a hundred years ago.
#41556
A
invent
B
invented
C
are invented
D
were invented
推荐题目
—Where is Jack? —I noticed that he ________the teacher’s office just now.
#38399
A
went into
B
goes into
C
was going into
D
is going to
—I knocked into a tree when I went to the bus stop for my friend.—I suppose you _____too fast.
#39764
A
had driven
B
are driving
C
drove
D
were driving
--When did you become a volunteer for the elderly?-- Two years ago. I this group since then.
#42442
A
joined
B
took part in
C
have joined
D
have been in
Half of her time in the library.
#39698
A
spends on books
B
is spent reading books
C
has paid for reading books
D
is spending to read