—Did you find the missing couple in the mountain yesterday?
—No, but we ______ to get in touch with them ever since.
A．had tried B．have tried C．have been trying D．had been trying
After working for two years, Tim Martin was ______ as the top manager in charge of the company.
A．ranked B．classified C．appointed D．recognized
If _____ without following the doctor’s instructions, the medicine may have serious side effects.
A．taken B．to be taken C．taking D．being taken
The Chinese government has promised to do ______ lies in its power to ease the pressure of high housing price for average-income families.
A．that B．what C．where D．which
He volunteered to work in a remote mountainous village in West China last year, which is still _____ on foot now.
A．available B．acceptable C．admirable D．accessible
– How did Mary react to the bad news?
– Oh, she was filled with sorrow and ______ a sigh.
A．let out B．dropped out C．tried out D．gave out
