题目内容

RT-Supermarket _______at 9 a.m. and it ______ for 10 hours every weekend．
A．opens；opensB． opens；is openC．is open；opensD．open；is open
B

试题分析：句意: RT-Supermarket这个超市在上午9点开业，它在周末一天营业是10个小时。第一空强调的是开业的时间，也是动作的开始，所以用open这个动词；第二空因为后面有时间段，所以这里应该用open的形容词词性表示状态，故用be动词来帮助构成系表结构，根据句意故选B。
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