Some insects take on the color of their surroundings to ________ themselves.
A.pretend B.prevent C.protect D.proceed
Although I spoke to him many times, he never took any ________ of what I said.
A.remark B.sight C.attention D.notice
John is a(n) ________ boy. Whenever I see him, he is working.
A.religious B.energetic C.curious D.familiar
Emergency line operators must always ________ calm and make sure they get all the information they need to send help.
A.stay B.become C.appear D.grow
We students should work hard and ________, we must believe in ourselves.
A.in all B.above all C.after all D.at all
She showed the visitors around the museum, the construction ________ had taken more than 5 years.
A.with it B.with which C.of it D.of which
