China's success in manned－spacecraft travel shows ________ our country has become one of the greatest powers in space research.
| A．what | B．which | C．/ | D．it that |
When Peter speaks in public, he always has difficulty ______ the right things to say.
| A．thinking of | B．to think of | C．thought of | D．think of |
As Jack left his membership card at home, he was forbidden ______into the sports club.
| A．going | B．to go | C．go | D．gone |
Soon children in the camp had many friends, _______ they shared food, stories and projects.
| A．for which | B．with whom | C．of which | D．to whom |
All the neighbors admire the family _______ the parents are treating their child like a friend.
| A．why | B．which | C．that | D．where |
The manager is still on _______ vacation, so I will be in _______ charge of the meeting today.
| A．/; the | B．the; / | C．/; / | D．a; the |