加油站停电发电机用油应如何处理？（）
A.用取样桶从油罐取油
B.作回罐处理
C.做销售处理
D.油罐车拖油来时用桶子装两桶放在一边待发电时用
参考答案：C
Mr. Smith ________ his pupils how to prepare for the test since 8 am, but no one listens to him.
A．has told
B．is telling
C．has been telling
D．will have told
根据所给汉语完成下列句子。
1. 直到他明天回来我才能告诉他。
I won't tell him _________ he __________ back tomorrow.
2. 电话是什么时候发明的？
When ________ the telephone __________?
3. 英语被作为一种重要的工作语言使用。
English is ________ _________ an important working language.
4. 冰不够厚,不能滑冰。
The ice wasn't _________ __________ for you to skate on.
5. 根据一个古代的中国传说,是神农发现了茶。
___________ ____________ an ancient Chinese legend, Shen Nong discovered tea.
