It’s very hard ___________the swimming pool.
| A．to swim across | B．to swim cross | C．swim across | D．swim cross |
Our teacher always tells us _______ more English in and out of class.
| A．speak | B．spoken |
| C．to speak | D．speaking |
Tom can make his kite ______ higher in the sky.
| A．fly | B．flies |
| C．flying | D．to fly |
The class _______ in two minutes.
| A．begin | B．will begin |
| C．beginning | D．begins |
My teacher often encourages us ______ hard.
| A．study | B．to study |
| C．studying | D．studies |
They have ______ their homework already.
| A．finish | B．finishes |
| C．finished | D．finishing |