All the students _____ know cheating in the exam is not allowed.( )
A.needB.mayC.mustD.can
The telephone ___ in 1876.( )
invents
invented
was invented
has invented
Lin Tao isn't here now.He ______ to Qingdao.( )
goes
went
has been
has gone
________ do you like pandas?
Because they are very cute.( )
What
Who
Why
Where
There are some people ____ soccer in the park.( )
play
plays
playing
to play
We often exercise to keep ______.( )
health
healthy
healthily
unhealthy