_________ much I practice, I shall never win an Olympic gold medal.
| A．Although | B．However |
| C．Whatever | D．Though |
We had an anxious couple of weeks ______ for the results of the experiment.
| A．wait | B．to be waiting | C．waited | D．waiting |
I don’t think English is a language as Russian.
| A．more difficult | B．as difficult as | C．such difficult | D．as difficult |
—I’m sorry. I ______ at you the other day.
—Forget it. I was a bit out of control myself.
| A．shouldn’t shout | B．shouldn’t have shouted |
| C．mustn’t shout | D．mustn’t have shouted |
“Do you have a laptop?” “Yes, I have .”
| A．it | B．one | C．that | D．a |
The airplane leaves at 7:00 p.m. So I have to be at the airport 5:40 p. m. at the latest.
| A．by | B．after | C．until | D．in |