---Can I speak to Tom, please? ---Yes. ____.
| A．I am Tom | B．Tom is here | C．That’s Tom. Who are you? | D．This is Tom speaking |
Had I known about this computer program, a huge amount of time and energy.
| A． | would have been saved | B． | had been saved |
| C． | will be saved | D． | was saved |
It is uncertainside effect the medicine will bring about, although about two thousand patients have taken it.
| A． | that | B． | what | C． | how | D． | whether |
The school advisers help you talk through your problems but they don't give you any direct.
| A． | solution | B． | target | C． | measure | D． | function |
The experiment shows that proper amounts of exercise, ifregularly, can improve our health.
| A． | being carried out | B． | carrying out | C． | carried out | D． | to carry out |
I guess we’ve already talked about this before but I’ll ask you again just __ .
| A．by nature | B．in return | C．in case | D．by chance |