—_____ the population of the U.S.A. in 2005?—It _____ about 296 million.A. What is; is B. What was; was C.How many was; was
----We have a lot of cakes here.Help _____ to some more ,kids.----Thank you.
Billy is so tired _____ he worked all night in his office.
We must stop _____down trees if we don’t want a world without them.
Are your parents strict_____ your school work ?
Alice and I often study and play_____ table tennis together.