--Sam, come downstairs, please. I need your help. --Sorry, Mum. I _____ on the phone. A.talked B. am talking C.was talking.
____________ careful you are, _____________ mistakes you’ll make.
—Hi, Lucy. Your skirt is very nice. —____
My name ____ Jack. Liu Ying and Sun Mei ____ my friends.
Please help Jack ____ his bike. He can’t see it.
—Are the black shoes ____? —No. It’s ____.