There _______ many people here _______ vacation. [ ]

_______ is necessary for you to lock the car when you don’t use it.

Is there anyone here name isBetty?—- Sorry, I don’t know.

Mr. Liu is our new head teacher this term and he wants to know _______.

Look! Mrs Green is wearing a black dress today.－ I think she _______ wear red. She looks young in red.