A lock ___ locking a door.
#80827
A
is used to
B
used to
C
is used for
D
is used into
推荐题目
Professor Smith ___ China yesterday.
#81109
A
arrived at
B
arrived in
C
get go
D
reached for
Two American couples each  ___ a Chinese girl and they happen to be twin sisters.
#75535
A
have adapted
B
has brought up
C
has received
D
have adopted