The teacher asked more ______to prevent the students’ eyes from being injured.
| A．to do | B．done | C．to be done | D．being done |
Bears ______ fat stores throughout the summer and fall to have energy enough to last them through winter sleep.
| A．build up | B．pack up | C．bring up | D．take up |
By 2013, cases of AIDS had been reported in Harbin, thus _____ AIDS a provincial concern.
| A．to make | B．making | C．having | D．made |
I was blessed with a happy childhood, ______ that most people would want to have.
| A．the one | B．one | C．it | D．/ |
The Arctic, which is abundant in oil, _____ second only to the Middle East, is ______ home to seals.
| A．the; a | B．/; the | C．the; a | D．/; / |
There are roughly 1, 000 students in Grade Two, most of _____ are girls.
| A．which | B．them | C．whose | D．whom |