—What do you think of Peter?
—He ________ be really difficult to get along with even though he’s a nice person in general.
A. shallB. shouldC. mustD. can
It is reported that more than half of ________ surveyed on the website say they are content with their current life.
A. whomB. themC. onesD. those
—Anything special about this device?
—Well, it can ________ between the cancerous and the normal cells under certain conditions.
A. concludeB. excludeC. discriminateD. undergo
Lots of campaigns have occurred in China to defend the Nansha Islands recently. What is your ________ of the situation?
A. intentionB. assessmentC. attitudeD. appointment
It’s natural for there ________ a generation gap between parents and their children.
A. beingB. having beenC. to beD. to have been
August always comes ________ we remember nothing but clear skies, green fields, and sweet-smelling flowers.
A. whenB. beforeC. untilD. if
