It's necessary____ masks(口罩) in public places during the COVID﹣19 period.( )
for us to wear
for us wearing
of us wearing
of us to wear
Is that man Mr.Zhang?
It____be him.He went to Beijing for a meeting yesterday.( )
can't
mustn't
needn't
Lily,where is your father now?Go and get him for lunch.
Just a moment,please.Father______a phone call in his room.( )
makes
is making
was making
It's windy outside,_____your jacket,Bob.Don't catch a cold,( )
try on
put on
take off
The woman______is singing on the TV show is our English teacher.( )
who
which
whose
I'll have a ten﹣day holiday.But I don't know______,
How about Paris?( )
what to do
where to go
when to go