He answered these questions by ______his head.

A.responded

B.answered

C.returned

D.remarked

A、would have answered

B、should answer

C、answered

D、had answered

If someone answered NO to most of these questions, he's advised to______.

A．take a fully online course

B．try a web-enhanced course

C．get access to technology help

D．choose courses on computer science

A.insurance

B.ensurance

C.assurance

D.assure

A.A. his answer was confident

B.B. he was confidently answered

C.C. he answered confidently

D.D. his answers were confident

A、joyful

B、awkward

C、ordinary

D、delightful

A.replied to

B.replied

C.answered to

D.answered for

If one answered yes to two questions he may experience a______level of body pollution.

A．considerable

B．high

C．medium

D．low

A. arrested

B. answered

C. treat

D. talked

A．He answered all her questions correctly.

B．He received a good grade in cooking class.

C．She likes what he has just cooked.

D．She's impressed with his knowledge.