The kind lady devoted all her life ______ those homeless children.
| A．helped | B．helping | C．to help | D．to helping |
-- How far is it from here to Huangshan Mountain?
-- About in a car.
| A．3 hours’ ride | B．3 hours’ walk | C．3 hours’ flight | D．3 hours |
--When did you become a volunteer for the elderly?
-- Two years ago. I this group since then.
| A．joined | B．took part in |
| C．have joined | D．have been in |
He met many problems he was going over his lessons.
| A．before | B．as soon as |
| C．since | D．while |
--Where does your uncle work, Tom ?
--He is in a hospital he works as a doctor.
| A．that | B．which | C．where | D．what |
In our school library there a number of books on science and the number of them growing larger and larger.
| A．is , are | B．are , is | C．has , is | D．have , are |