Experts believe ________ people can waste less food by shopping only when it is necessary.
| A．why |
| B．where |
| C．that |
| D．what |
Many a student_____ the importance of learning a foreign language.
A have realizedB has realizedC have been realized D has been realized
. Mary_____ to college last year. Unluckily, she couldn’t take the examination because of a sudden disease.
A must have gone B can have gone C should have goneD could have gone
. Look! There is a whole crowd of people over there. Go and see what_____ and if it is a bargain, buy it.
A is sellingB is being soldC has been selling D has been sold
---- Father, why do you always make me do exercise every morning?
-----_______ good health.
A Gain B GainingC To gain D Having gained
With a series of strange phenomena_____ , people living in the small village began to suspect that the earthquake was coming.
A to happenB happeningC happened D being happened