After so long a walk, he was too _____ further.
| A．tired for walk | B．tire to walk | C．tiring to go | D．tired to go |
I want to know _____.
| A．what the matter is | B．what matter it is | C．what's the matter | D．the matter is what |
Don't have your children _____ for hours reading books in _____ dark a room.
| A．sitting; so | B．sit; such | C．to be sitting; so | D．to sit; such |
Liaocheng, Shandong Pro. is a beautiful city, ____11 pay a three-day visit.
| A．which | B．where | C．to which | D．in which |
The teachers are doing what they _____ their stuaits.
| A．can to teach | B．can teach | C．can teaching | D．can to teaching |