(1) He's been practicing all morning. He ( ) be tired.
((a) must (b) cannot (c) must not (d) doesn't have to
(2)|(
) often take a walk around here when I was a high school student.
(a) would (b) should (c) might (d) could
(3) The window is broken. Someone (
) a stone at it.
(a) may have thrown (b) should have thrown (c) may throw (d) should throw
(a) may
(4 ) ( ) I stay here a little longer? — That's all right.
(a) Can (b) Must (c) Should (d) Shall
(5) Could you join us for dinner tonight? - ( ). I've got a toothache.
(a) I'd like not (b) I'd like to (c) I'd rather do (d) I'd rather not