—Excuse me, sir. You can’t enter ________ office without ________ permission.
—But the manager is expecting me.
A.the; a | B.an; the |
C.the; 不填 | D.不填;不填 |
When I went in , they were ____ in a heated discussion .
A.absorb | B.absorbed | C.absorbing | D.being absorbed |
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 |