Jim couldn’t understand how the machine worked until his friends____ how to use it.
We haven’t got any coffee. Let’s have tea __________.
Don’t say bad words ______ your friends. It’s ________.
____________ careful you are, _____________ mistakes you’ll make.
–Would you please give me a hand and take the bookcase upstairs? ---_______.
Jack sings better than ________ in his class. Which is WRONG?