To save class time，our teacher has ________ students do half the exercise in class and complete the other half for our homework.
| A．us | B．we | C．our | D．ours |
Most of the roads were covered with thick snow, ____ made our journey more difficult.
| A．one | B．it | C．which | D．that |
— You look tired.
— Yes. I ___ non-stop until 8 o’clock.
| A．had worked | B．work | C．have worked | D．was working |
People are living in ___ world where mouse clicks rule our life, so online searches have become _____ must.
| A．the; / | B．/; a | C．a; a | D．a; the |
It is only _______ your heart is really in it _______ you can play your best.
| A．that; that | B．that; when | C．when; that | D．when; when |
--- How do I take this medicine?
--- Well, look at the _______.
| A．explanations | B．expressions | C．introductions | D．directions |