He had collected plenty of historical evidence, proved that humans used to have different sleeping patterns.
A．that B．which C．it D．what
I can’t see any reason to use cash anymore it’s so much easier to use other means of payment.
A．while B．therefore C．although D．since
It has been announced that candidates remain in their seats until all the papers have been collected.
A．shall B．can C．should D．must
Although I’m a very tolerant person, I hate when people try to push my limit.
A．this B．that C．it D．one
Chinese mothers are always using other people’s achievements as model their own children to achieve the same standard.
A．to force B．forced C．forcing D．being forced
－How was your trip to the Maldives?
－I’ve never had one before.
A．a pleasant B．a more pleasant C．a most pleasant D．the most pleasant
