-Let’s have _____ lunch now,Simon.-OK. I want to have _____ apple after that.
A. a, an
B. /, a
C. / , an
D. a, a
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-When did the big earthquake in Wenchuan happen?-_______2:28 _____ the afternoon of 12 May 2008.
A. On ; in
B. At; on
C. At; in
D. On; on
I ________ abroad for several years, but I have never regretted my final decision to move back to my motherland.
A. am living
B. had lived
C. have lived
D. will live
--- Why is Grace’s Chinese so good? --- Because she ________ China for ten years.
A. has gone to
B. has been to
C. has come to
D. has been in
急性上呼吸道感染潜伏期多为
A. 1天
B. 5天
C. 2-3天
D. 10天