15.__________is very clear to everyone that he's round and tall like a tree.
16.
| A．This | B．What | C．That | D．It |
The school required ____.
| A．rebuilding | B．to be re uilt | C．to have rebuilt | D．rebuilt |
You don’t need ____ so early.
| A．leave | B．left | C．to leave | D．leaving |
I need some paper _____.
| A．to write | B．to write on | C．to write with | D．writing in |
His speech is easy _____.
| A．to follow | B．to be followed | C．for being followed | D．to follow it |
Physics is difficult ____.
| A．to be learned | B．to learn | C．to be learning | D．to be learn |