It is said that potato chips ____________ by mistake about a hundred years ago.
#41556
A
invent
B
invented
C
are invented
D
were invented
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----I’m afraid the meeting has begun.  ----Don’t worry. It _________ until the bell _________.
#37273
A
doesn’t begin; rings
B
won’t begin; will ring
C
won’t begin; rings
D
doesn’t begin; will ring
 Please be quiet. My little child _______.
#40370
A
go to bed
B
is sleeping
C
sleeps
D
going to school
It        when I        my homework last night.
#40154
A
raining, did
B
rained, was doing
C
was raining, do
D
rains, was doing