A Wechat (微信) is an invention __________ can help people talk to friends, share photo, ideas and feelings freely.
#42631
A
which
B
who
C
whose
D
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We will never forget those happiest days _______ we spent on the summer camp.
#42644
A
which
B
that
C
when
D
on which
Tony, tell me the result of the discussion ______ you had with your dad yesterday.
#43217
A
what
B
which
C
when
D
who
One of the difficulties we have English is how to remember new words and expressions.
#43196
A
to learn
B
in learning
C
learn
D
learned
The story ______ I read the newspaper was about a common problem among teenagers.
#43203
A
whose
B
who
C
that
D
where