He, together with his friends，_______ coming to visit us this weekend.
| A．is | B．are | C．will | D．should |
The ________ for tonight’s talk is protecting the environmet.
| A．title | B．subject | C．news | D．theme |
You can't camp________you like these days. Many natural areas are now under protection.
| A．whichever | B．wherever | C．what | D．when |
The samples__________in quality but were general acceptable．
| A．varied | B．changed | C．disagreed | D．Exchanged |
Cleaning women in big cities get _____ by the hour.
| A．pay | B．paying | C．paid | D．to pay |
What makes the space shuttleis that it takes off like a rocket but lands like an airplane．
| A．exceptional | B．strange | C．unique | D．rare |