用所給單詞的適當(dāng)形式填空．
（1）It means "No

smoking

smoking

（smoke）"．
（2）There

is

is

（be） some milk in the glass．
（3）You should

go

go

（go） home first．
（4）He always

goes

goes

（go） to school at 6：00．
（5）---Where's David？---He's

playing

playing

（play） computer games in the room．
（6）You can

go

go

（go） to the park now．
（7）He

likes

likes

（like） apples very much．
（8）Listen． The girls

are singing

are singing

（sing） an English song in the room．
（9）It's time

to have

to have

（have） lunch．
（10）Shall we

go

go

（go） there now？