—____________ do you put a lot of snakes into the forest?
— To protect the ecosystem(生态系统).
A.Why B.How C.What
— Did you _______ the International Marathon in Lan Zhou on November 2, 2019?
— Of course. How exciting!
A.watch B.discover C.suppose
All work and no play makes Jack dull. Have __________ good rest after this exam and get ready for ___________ coming challenge.
A.a; the B.an; a C.the; a
Which word of the following doesn't have the same stress as the others?
A.Central B.Compass C.Collect
Which pair of the words with the underlined letters has the same sound?
A.action alien B.mind swing C.doubt climb
Which of the following words has a different sound from the underlined letter of the word “rise”?
A.knife B.price C.bridge