He is so busy with the research _____ he has no time left for any other activity.
A. which B. that C. why D. Because
It was going to be some time _____ he would see his father again.
A. before B. after C. since D. When
She does not know _____ the situation, for she is too inexperienced.
A. how to deal with B. what to deal with
C. how to deal with it D. what to do with it
The reason ____he was late was ____he had taken a wrong bus.
A. why; because B. for; because of
C. why; that D. for; that
—Do you know what the letters MBA _____?
—Sorry, I don’t know.
A. stand for B. stand by
C. belong to D. take place
The flowers don’t need too much water; you can just water them _____.
A. each other days B. every other day
C. each of two days D. every of two days
