问题
选择题
Tom, clean up the broken glass _________ someone walks on it.
A.since
B.when
C.before
D.as
答案
答案:C
题目分析:考查连词:A.since自从,既然,B. when当…时候,C. before在…前面,D. as 正如,因为,虽然,句意:汤姆,在有人踩在上面之前把破碎的玻璃打扫干净。选C。
Tom, clean up the broken glass _________ someone walks on it.
A.since
B.when
C.before
D.as
答案:C
题目分析:考查连词:A.since自从,既然,B. when当…时候,C. before在…前面,D. as 正如,因为,虽然,句意:汤姆,在有人踩在上面之前把破碎的玻璃打扫干净。选C。