We hope your suggestion will contribute __________ the problem.
| A．to solving |
| B．to solve |
| C．of solving |
| D．solved |
Thirty dollars ________ too expensive.
| A．are | B．is | C．were | D．be |
The number of pages in this dictionary ________ about two thousand.
| A．are | B．has | C．have | D．is |
Now Tom with his classmates ________ football on the playground.
| A．play | B．are playing | C．plays | D．is playing |
Half of the workers here ________ under 30 ________.
| A．is;years | B．are;year old | C．is;years old | D．are;years of age |
Political parties often differ in their views on various _____ concerning their own countries.
| A．ways | B．measures | C．issues | D．patterns |