Bears _____ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.
| A．pack up | B．build up | C．bring up | D．take up |
The lawyer seldom wears anything other than a suit __________the season.
| A．whatever | B．wherever | C．whenever | D．however |
Water, _______enough, can change into vapour quickly.
| A．when heated | B．heating | C．though to be heated | D．when is heated |
To tell the truth, I won’t go to the party_______.
| A．so as to invite | B．even if invited | C．if inviting | D．if invite |
The man stopped from time to time_______whether he was being followed.
| A．as if found | B．as to find | C．as if to find | D．when found |
Doctors have said that as many as 50% of patients don’t take medicine_______.
| A．like directed | B．to be directed | C．as directed | D．so that directed |