The boy ____is holding a ball is my brother.( )
A.whatB.whichC.不填D.who
﹣﹣﹣ Our motherland's 70th birthday is coming.
﹣﹣﹣ Great! We will hold many activities to celebrate it _____.( )
wisely
warmly
simply
To keep our city beautiful, the _____are always very busy in the streets.We shouldn't throw rubbish everywhere.( )
policemen
cleaners
drivers
When we read a piece of news online, we'd better make sure it's _____before sending it to others. If not, we may spread something bad.( )
true
special
strange
﹣Parents should let children _____home and find more about the world.
﹣After all, birds should fly freely in the sky.( )
leave
enter
reach
You can't decide whether or not you like something until you try it, _____it's important to try something new.( )
but
or
so