What the doctors really doubt is________ my mother will recover from the serious illness soon.
| A．when | B．how | C．whether | D．why |
The disk ,digitally ______in the studio, sounded fantastic at the party that night．
| A．recorded | B．recording | C．to be recorded | D．having recorded |
Scientists are convinced _____the positive effect of laughter _____physical and mental health．
| A．of ;at | B．by; in | C．of ; on | D．on ;at |
We had wanted to finish our task by noon, but it didn’t quite ______．
| A．find out | B．give out | C．hand out | D．work out |
____you eat the correct foods _____be able to keep fit and stay healthy．
| A．Only if ; will you | B．Only if ;you will |
| C．Unless ; will you | D．Unless ; you will |
The local government has done everything it canthe buried miners．
| A．save | B．saving | C．to save | D．be saved |