问题

Oh my god! You ______ wear slippers to attend the conference. — I’m sorry I forgot there is a conference. [ ]

A: must
B: can
C: should
D: shall

正确答案是：

同类题型

What can we do to help others—We can ______ a food bank to help hungry people.

When and where shall we meet? -We _______ meet at the station at four this afternoon

didyou visit the Science Museum –Three months ago.

Lucy practiced_____the piano last weekend.

Hello, are you from America—–_________________.