The police still haven’t found the lost child, but they’re doing all they .
| A．can | B．may | C．must | D．should |
Recently a kind of industrial glue which is ________ to people’s health has been found in some medicine.
| A．harmful |
| B．harmless |
| C．good |
| D．friendly |
You’d better stop alcohol abuse, for it will ________ the risk of blood disease.
| A．multiply |
| B．occupy |
| C．take |
| D．achieve |
In order to be ________ for Christmas, all these gifts must be mailed immediately.
| A．against |
| B．in time |
| C．at a time |
| D．in no time |
The talk between the two sides started and continued in a friendly ________.
| A．condition |
| B．atmosphere |
| C．situation |
| D．state |
________ we will have a trip to Tianjin depends on ________ he will have a holiday during the Labour Day.
| A．Which; whether |
| B．That; what |
| C．What; whether |
| D．Whether; whether |