问题

.Playing with a cell phone, he suddenly________ the teacher staring at him.

A:which
B:became aware of
C:reflected
D:aware for

正确答案是：

同类题型

Only ______ the painting _______ decide whether it is worth buying.

下列各句中，没有语病的一句是

Every year a great number of foreign tourists pay avisit to _____ we Chinese call Heaven Lake

. __________ you must do is to choose ascene __________ will best show your acting talent.

_____ name is Gina, and _____ is my good friend.