You cannot tell________looking at someone whether or not he has HIV.
| A．without | B．by |
| C．for | D．with |
________person is full of life and is always doing things.
| A．A living |
| B．A live |
| C．An alive |
| D．A lively |
—There will be a(n)________football match between China and Brazil on TV tonight.
—What time? I can't wait for it.
| A．live |
| B．living |
| C．lively |
| D．alive |
I would appreciate it________you call back this afternoon for the doctor's appointment.
| A．until |
| B．if |
| C．when |
| D．that |
________much advice I gave him, he did exactly what he wanted to do.
| A．How |
| B．Whatever |
| C．However |
| D．No matter |
The research is so designed that once________nothing can be done to change it.
| A．begins |
| B．having begun |
| C．beginning |
| D．begun |