_____ at the back of the temple is the Tianning Tower, which, _____154 metres into the sky, is the tallest tower of the kind in China.
| A．Located; rises | B．Locating; rising | C．Located; rising | D．Locating; rises |
The missing boys were last seen ___ near the river.
| A．playing | B．to be playing | C．play | D．to play |
If I ___ free tonight, I'll go to the cinema with you.
| A．an | B．was | C．will be | D．be |
When I handed the report to John, he said that George was the person ___.
| A．to send | B．to sending it | C．to send it to | D．for sending it to |
She can’t help___ the house because she’s busy making a cake.
| A．to clean | B．cleaning | C．cleaned | D．being cleaned |
We agreeed ___ here but so far she hasn't turned up yet.
| A．having met | B．meeting | C．to meet | D．to have met |