You _______ see a dentist when you have a toothache.
I’m afraid there_____ a heavy rain this afternoon.
The book_______ me 20dollars.
—What did he say? I couldn’t hear him.— _____________.A. He says the earth goes round the sun. B. He said the earth goes round the sun.C: He said the earth went round the sun. D. He says the earth went round the sun.
I am sure that you’ll ______ the difficulty.
They have been skating______ 2 hours ago.