by the growing interest in nature, more and more people enjoy outdoor sports.
| A．Influenced | B．Influencing | C．Having influenced | D．To be influenced |
He appears ______ a long time. He is impatient for my arrival.
| A．to wait | B．to be waiting | C．to have waited | D．to have been waiting |
Every device ______in the plane must be designed and made with great care so as to make sure that nothing goes wrong in operation.
| A．fitted | B．to be fitted | C．fitting | D．being fitted |
He left home early only______he was late as he went a wrong way.
| A．found | B．to find | C．finding | D．being found |
He looked around and caught a man _______ his hand into the pocket of a passenger.
| A．put | B．to be putting | C．to put | D．putting |
The shop doesn’t open until 11 am, _______ it loses a lot of business.
| A．for | B．or | C．but | D．so |