Mary: What are you working on? Susan: I'm doing some embroidery. Mary: ______ Susan: I don't do very much, just for very special occasions.

A．I didn't know you did needlework.

B．I think you have done a good job.

C．Where did you learn to do needlework?

D．Why do you do needlework?

Science is still ______ of the causes of many kinds of cancer.

A．ignorant

B．unconscious

C．conscious

D．informed

Mrs. White is different from her friends who were ______.

A．easily satisfied

B．not always hopeful

C．sure to succeed

D．not interested in free food

What matters ______ not winning but participating.

A．are

B．to be

C．was

D．is

What should you do ff your child is under six years old?

A．You should let him take two tablets a day.

B．You should reduce the dosage anyway.

C．You should find the directions on the bottle.

D．You should ask the doctor for advice.