By the year 1889, there were just 541 bison ________ in the whole of North America.
| A．leaving alive | B．to leave alive |
| C．to be left alive | D．left alive |
— I’d like to go to the cinema with you, Dad.
— Sorry, my darling, but the film is ___________for adults only.
| A．appointed | B．intended | C．constructed | D．exposed |
These mistakes are very___________ among students, so we’re not surprised if you also make such mistakes.
| A．grand | B．common | C．considerate | D．popular |
If anyone happens to drop in while I am out, _________ him or her leave a message.
| A．have | B．get | C．ask | D．tell |
Though I’ve tried very hard to improve my English, by no means ___________with my progress.
| A．the teacher is not satisfied | B．is the teacher not satisfied |
| C．the teacher is satisfied | D．is the teacher satisfied |
Science and technology have in important ways contributed to the improvement of agricultural production.
| A．contributed to | B．resulted from | C．carried off | D．handed over |