China _______ a sharp increase in the number of aged people over the past decade.
| A．sees | B．saw | C．has seen | D．will see |
—I’d like to make an appointment with Doctor Smith. Would 9:00 tomorrow be all right?
—. Her schedule is full in the morning.
| A．Yes, she’s free then | B．I’m afraid not |
| C．You must be joking | D．Wel1, it depends |
—I am going to travel to European countries. Would you consider telling me about your experiences there？
—______.Let’s discuss it over dinner.
| A．That’s all right | B．By all means | C．Go ahead | D．It just depends |
There ______ many people ______ in the office, but now nobody is allowed to.
| A．used to be；smoking | B．used to have；smoking |
| C．used to be；smoke | D．used to have；smoke |
I’m sure Xiaoxiao can ______ a lot of money doing this job and he can ______ a living with the money he earned himself.
| A．have；make | B．make；make | C．make；get | D．get；make |
It is really a challenge for me to finish it. In order not to be disturbed, I spent three days ______ in my study surfing the internet to do the research.
| A．locking | B．locked | C．to lock | D．lock |