Great changes ________ in my hometown since three years ago.
A.were taken place B.have taken place C.took place D.have been taken place
Great changes have ________ since I left my hometown 10 years ago.
A.taken care B.taken place C.taken after D.taken off
—Do you have iPhone 6S?
—Sorry, they have been ________. You may come next week.
A.given out B.looked out C.sold out D.come out
——Tu You you received the Nobel Prize for her________of anemisinin(青蒿素).
——And she was the first Chinese who won the prize in science.
A.design B.thought C.invention D.discovery
—I don't know if you remember me, David. We were in the same summer camp last year.
—Sure I do. You were always telling________and we all laughed.
A.jokes B.wishes C.smiles D.worries
The government ________ that the danger was over on the radio.
A.spoke B.valued C.examined D.announced
