I can’t find my socks. Where ________ I have dropped them?

—Have you checked the engine? —Yes, I did twice; there ______ be anything wrong with the car.

It was a fine day yesterday. I ________ have taken my raincoat with me.

Harry is feeling uncomfortable. He _______too much at the party last night.

I chose the most popular major instead of my favorite one，but I had to drop out and started again where I＿＿＿have gone in the first place.

— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.— Oh, it __________ my younger sister. She was in my room at that moment.

----I missed the first part of the film. It was really a pity．----You _____home half an hour earlier.

I tried more than once to persuade the taxi driver to slow down, but he just __________ listen.

You _____ have bought the book for me, but thank you all the same.

---- May I smoke here?---- If you      , choose a seat in the smoking section

Why________ you always leave your dirty clothes in the bedroom?

It_____ have been Tom that parked the car here, as he is the only one with a car.

— Who is absent from the lecture today? —_____________you ask? Peter, of course.

Looking after very young children _____ be very annoying sometimes, but you’ll get used to it after a while.

No one ______ be more generous; he has a heart of gold.

I want to open the door, but it _____ open.

—He should have come to join in the thorough cleaning.—He _____. I don’t think it was his turn.

It has been announced that all the students ____ put on masks before going to school in case they are infected with SARS virus.

If you spend the spring sneezing, take a look at your plate. Some foods _____ make allergies worse.

Take care! Accidents _________ happen along this part of the road.