-Is Mr. Li in his office ? -No, he _____
题型:选择题
问题:
-Is Mr. Li in his office ?
-No, he __________ in the office. He’s ill in hospital.
A.must be
B.can’t be
C.should be
D.needn’t be
-Is Mr. Li in his office ?
-No, he __________ in the office. He’s ill in hospital.
A.must be
B.can’t be
C.should be
D.needn’t be