---Was it the new school headmaster who
题型:选择题
问题:
---Was it the new school headmaster who walked by ?
--- _____.
A.It must be that
B.It must have been
C.He must be
D.This must have been
---Was it the new school headmaster who walked by ?
--- _____.
A.It must be that
B.It must have been
C.He must be
D.This must have been