Experiments of the kind ____ in both the U.S. and Europe well before the Second World Wall.
After the mew technique was introduced ,the factory produced ____in 2001 as the year before.
—Is Jissica a diligent student ? —No , but she is a lazy one , if .
Students shouldn’t say “Get out” or ______ remarks.
—Daddy, which of these smart hats do you like best in the hat shop? —_______. They are both expensive and less warm-keeping.
—Can I help you? —Yes, I’d like to try on some sports jackets just like ____ I’m wearing.