【单选题】
Not only the teacher but also the students _______ smiling.
【单选题】
Computers can also help the police fight ______________ .
【单选题】
30. -May I borrow these three magazines? -____. You may keep them for two weeks.
【单选题】
May [填空] speak to Jack?
【单选题】
He also checks daily ( ) in the rooms and necessary supplies
【单选题】
In some cases, your instructor may tell you the topics ____ or may give you a choice of topics to write about.
【单选题】
May I see the menu, please?
【判断题】
May I sit beside you?
【单选题】
—She may not be free today.—________, well have to put the meeting off.
④
If she may not be free today
【单选题】
Spitting on the ground is not only ______ but also harmful to others’ health.