Some people find the film Avatar difficult______.
| A．to understand | B．to be understood | C．understood | D．being understood |
Luckily, Smith brought a map, __________ we would have got lost.
| A．that | B．of which | C．without which | D．which |
Yao Ming is generally ________ as the best basketball player in the world.
| A．substituted | B．acknowledged | C．contradicted | D．recommended |
You can’t find such a good place ______ we visited the other day.
| A．that | B．which | C．where | D．as |
Without ____ participation of so many people, the completion of such a project in a short period would be out of ______ question.
| A．a; / | B．the; / | C．a; the | D．the; the |
He apologized for _____.
| A．his not being able to come | B．his being not able to come |
| C．his being able not to come | D．him not being able to come |