The maths problem remained confusing to the boy although _______ over and over.
| A．explaining | B．being explained |
| C．explained | D．having explained |
What a big surprise to see you here! I _______ you ____ still abroad.
| A．think; were | B．thought; are | C．think; are | D．thought; were |
– What caused the fire?
--- ______.
| A．Because of a cigarette end | B．cigarette end caused |
| C．A cigarette end | D．Because a cigarette did |
.After the party was over, the children were asked to _____the fire.
| A．put up | B．put out | C．put off | D．put away |
Women are always thought _______the weak.
| A．of as | B．of | C．as | D．of being |
The great use of the school education is not so much to teach you things _____ to teach the art of learning.
| A．rather than | B．than | C．as | D．nor |