A、be responsible for
B、be careful of
C、be capable of
D、be strive for
第1题:
A.can
B.could
C.is able to
D.must
第2题:
3.—__________ 1 go out for a while?
—No,you __________ You must finish your homework first.
A. Must,needn't
B. Can,may
C. May,mustn't
D. May,must
第3题:
第4题:
---- Look! The man at the gate ________ be our headmaster. He is always standing there every morning.
--- - No, it ________ be him. He is holding a meeting in the office now.
A.must, can’t B.must, mustn’t C.can’t, can’t D.can’t, mustn’t
第5题:
We learn from the passage that__________
A.the passengers will have a night flight
B.they will have, meals during the flight
C.the plane is going to fly across a sea
D.the plane provides excellent service to its,passengers
第6题:
已知wire [31:0] bus;则下列说法真确的是 。
A.bus [31]是bus的最高有效位
B.bus [0]是bus的最高有效位
C.bus [31]是bus的最低有效位
D.bus [0]是bus的最低有效位