The writer found ________ difficult ________ English.
| A．it’s ; learn | B．it; learning |
| C．it’s; learned | D．it; to learn |
They haven’t decided where________on vacation．
| A．to go |
| B．go |
| C．to going |
| D．going |
—Have they come here________？
—Yes，they have come here________．
| A．yet；yet |
| B．already；already |
| C．yet；already |
| D．already；yet |
We________that interesting movie before．
| A．didn’t watch |
| B．don’t watch |
| C．won’t watch |
| D．haven’t watched |
—Whose book is this？
—It belongs to________．
| A．me |
| B．my |
| C．mine |
| D．I |
His words made us________．
| A．to laugh |
| B．laugh |
| C．laughing |
| D．to laughing |