______ our return, all the students burst into cheers for our excellent performances.
| A．At | B．In | C．On | D．With |
We are bound to solve the present severe problem, ________ we act intelligently and promptly.
| A．even though | B．unless | C．as long as | D．in case |
— David, how is your new job?
— ________ the salary, it’s not bad.
| A．Besides | B．Apart from | C．In addition to | D．As well as |
It is well known that too much ________ to the sun can promote the development of many skin cancers.
| A．contact | B．disclosure | C．exposure | D．exhibition |
I recommend you _______ the new restaurant on the corner; the food is excellent.
| A．would try | B．tried | C．trying | D．try |
Bacteria do not develop at low temperature, so that food can be _______ in cold storage.
| A．deserved | B．reserved | C．preserved | D．conserved |