The famous scientist was going out _____ he found himself surrounded by lots of young people.
| A．when | B．before | C．while | D．after |
Most of the students in our school adore ______ to the cinema.
| A．to go | B．go | C．going | D．to going |
A man who will ______ his life for his country is a true man.
| A．dedicate | B．promote | C．sacrifice | D．devote |
____ him so far, she felt a little worried.
| A．Having not hear from | B．Not having heard from |
| C．Not hearing from | D．Have not heard from |
While other scientists are keeping__ __eye on changes in the H5N1 bird flu strain, the scientists in England are working on vaccines, in case it becomes highly infectious in __ __humans.
| A．a , / | B．an, / | C．the, an | D．an, the |
My sister ,as well as her classmates who _____late for class,
_____criticized by Mr. Hunt.
| A．were ;was | B．was; were | C．was; was | D．were; were |