Our teacher often asks us time.( )
not waste
don't waste
not to waste
doesn't waste
(2014)I great progress in my English study since last year.
Great changes in my hometown recently. A.took place B. happened C.have taken place
--- What are you doing here, Mrs. White? ---I'm waiting for my son. He________ back from school.
Shenzhou X, China’s fifth manned spacecraft, ________into space on June 11. 2013.
That poor man has for three years. A. died B. been died C. been dead