Mountain climbing ______ be really dangerous at times even though it is challenging and exciting in general.
| A．can | B．should | C．shall | D．must |
Her new album ______last month and became a hit in no time.
| A．came out | B．came about | C．came up | D．came across |
Be careful about everything for your carelessness will __________our difficulty.
| A．add up to | B．add in | C．add up | D．add to |
Experts are trying to work out a plan to deal with the problems caused by global warming _________ it is too late.
| A．if | B．before | C．when | D．until |
Look over there—there’s a very long, winding path _________ to the house.
| A．leading | B．leads | C．led | D．to lead |
It is in Hong Kong _______ you’re going to find the cellphone _________ you have been wanting to buy.
| A．that; that | B．where; which | C．where; / | D．that; what |