-Can Professor Li be in the laboratory?
题型:选择题
问题:
-Can Professor Li be in the laboratory?
-He ________ be; I saw him there half an hour ago.[ ]
A.can
B.must
C.might
D.need
-Can Professor Li be in the laboratory?
-He ________ be; I saw him there half an hour ago.[ ]
A.can
B.must
C.might
D.need