A number of students in this class ____to Beijing once .
A: were
B: have been
C: is
D: has been
A: were
B: have been
C: is
D: has been
举一反三
- The number of foreign students attending Chinese universities ______ rising steadily in the past ten years. A: was B: were C: has been D: have been
- The number of foreign students attending Chinese universities（ ）rising steading in the past ten years. A: was B: were C: has been D: have been
- Nobody but Betty and Mary _____ late for class yesterday. A: was B: were C: has been D: have been
- No one except two students ______ the meeting. A: has been late for B: have been late for C: was late for D: were later for
- 6. The number of foreign students attending Chinese universities _______ rising steadily since 1990. A: ais B: are C: has been D: have been