Find ways to praise your children often，__________ you'll find they will open their hearts to you.
| A．till |
| B．or |
| C．and |
| D．but |
____, as long as I’m with nature, I don’t care.
| A．However tough the journey is |
| B．Whatever tough the journey is |
| C．However the journey is tough |
| D．Whatever the journey is tough |
The human body consists of organs, each ____a definite job to do.
| A．have | B．to have | C．has | D．having |
—Why does the river smell terrible
—Because large quantities of water________．
| A．have polluted | B．is being polluted |
| C．has been polluted | D．have been polluted |
The horse covered the distance in six days_____ the train's 28 hours.
| A．comparing with | B．being compared with |
| C．to compared with | D．compared with |
---We need a person very much to think up a creative idea.
--- ______ the new manager have a try?
| A．Shall | B．Must | C．Should | D．Need |