To make members of a team perform better, the trainer first of all has to know their ______ and weaknesses.
Whenever a patient needs an injection of Penicillin, the doctor does need to make sure whether his patient is ___ to the medicine.
With all the food supply ___, the researchers had to put an end to the wildlife protection project and returned home.
I was not hearing to the teacher, or else I ___ his questions.A. answered B. had answered C. would have answered C. have answered
Boss ___ us taking some days off to get refreshed after so many days of hard work.
As the international situation is growing more complex, what China needs should be a ___ foreign policy.