We were told not to touch the equipment in the laboratory unless ________.
| A．allowed to do | B．allowing to do | C．allowed to | D．allowing to |
Mary ________ a smile when she heard her family went to Australia without her.
| A．wore | B．performed | C．controlled | D．managed |
— I heard that there were a lot of shouts and screams at yesterday’s party. It must have been terrible.
— Oh, no. ________, I enjoyed every minute.
| A．On the contrary | B．In the end | C．As a result | D．On the other hand |
— Which of these two books will you take?
—I will take ______ in case the trip is boring.
| A．all | B．either | C．both | D．neither |
—Peter, you look so tired and wet all over!
—Yes, all afternoon I ________ football on the playground.
| A．am playing | B．have been playing | C．played | D．have played |
The passengers were at ________ loss when ________ word came that their voyage was called off because of the hurricane.
| A．the; a | B．a; the | C．a；/ | D．/; a |