.Mr Harris apologized ______ the children ______ the lady ______ what they had done.
| A．for; to; to | B．to; to; for | C．for; to; for | D．to; for; for |
Genius is a complicated concept , many different factors.
| A．involved | B．involving | C．to involve | D．being involved |
We had hardly arrived at the foot of the Yuntai Mountain it began to rain heavily .
| A．than | B．when | C．until | D．after |
I am calling to consult the position in yesterday’s Tianjin Daily .
| A．advertised | B．to be advertised | C．advertising | D．having advertised |
Fortunately , the adventurers brought the GPS with themselves, they might have been lost in the desert.
| A．of which | B．without which | C．in which | D．about which |
It is uncertain side effect the medicine will bring about , though about one thousand patients have taken it.
| A．that | B．whether | C．what | D．how |