Theytriedtoplay()theseriousnessofthedisaster.
A. on
B. as
C. down
D. onto
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Itcostmeonepound,p()10pencetohavetheletterposted.
A. pluses
B. plused
C. plus
D. plan
Thanks()ourmedicalknowledge,thisterriblediseaseismuchlesscommonnow.
A. to
B. with
C. has
D. and
Insomecases,peopletreattheirpets(宠物)()membersoftheirfamilies,orperhapsbetter.
A. in
B. like
C. of
D. on
GDP在2万亿以上的国家占了世界经济的63%。
A. 对
B. 错