( )We must pay attention _______the traffic lights. A. at B. to C. in
Juice and water are healthy drinks,_____ Coke isn't healthy drink. A.and B.but C.or
There are _____ students in our class.That is 19 boys and 21 girls。 A.forty B.fourty C.fourteen
_____ is a doctor.What about _____ father? A.His,your B.Her, your’s C.His,you
—Where _____ you _____? —I'm from Beijing. A.are, from B.do, from C.are, come
—How many computers _____ in your classroom? —There are two. A.are there B.are you have C.does you have