---A car knocked Jack down while he was playing on his way home.
---Really? We are told in the street.
| A．not playing | B．not play | C．don’t play | D．not to play |
_______ interests me most in the world is the natural beauty of Guilin.
| A．That | B．Which | C．it | D．What |
Idon’tthink______possibletomasteraforeignlanguagewithoutmuchmemorywork.
| A．that | B．which | C．it | D．this |
______forsometimeafteratiringdayisveryenjoyableandexcitingformeinsummer.
ASwimB.SwimmingC.Goswimming D.Toswim
We believe scientists will ________a way to solve the problem of air pollution.
| A．set off | B．put off | C．come up with | D．catch up with |
Hiswife______hischildrenwasinvitedtotheparty.
| A．and | B．or | C．aswellas | D．butalso |