The WHO has warned that______.
A: the skies over Mozambique have been too busy
B: malaria has risen sharply
C: medical services have not been available
D: medical staff is not enough
A: the skies over Mozambique have been too busy
B: malaria has risen sharply
C: medical services have not been available
D: medical staff is not enough
举一反三
- John is the only one of the staff members who __________ to be promoted. ( ) A: is going B: has been C: have been D: are going
- Jerry is one of the students who ___ England. A: have been to B: has been to C: have to D: has gone for
- She is one of the volunteers who ______ greatly praised by the government. A: have B: have been C: has D: has been
- There has been a decrease（）the number of students entering the Medical College this year. A: on B: over C: in D: of
- The committee (A. has been arguing B. have been arguing) over the problem among themselves for two hours. A: has been arguing B: have been arguing