__________and the problem could be settled.
| A．A bit more effort | B．To make more effort |
| C．Making more effort | D．If you make more effort |
Little Jim sat under the tree, ___ about that maths problem.
| A．to think | B．and thinks | C．thought | D．thinking |
More than 70 percent of the playground in our school __ covered by water now.
| A．are | B．is | C．were | D．be |
Shanghai is __ the east of Nanjing.
| A．in | B．to | C．from | D．om |
The Great Wall took _ a new look after the People\s Republic of China was founded.
| A．for | B．on | C．in | D．at |
Tom is not used to __ in public.
| A．speak | B．speaking | C．being spoken | D．having spoken |