---You looked nervous. What’s the matter?

---I have to give a speech, but I am afraid of speaking ______.

A. in public B. in person C. in silence

You can ______ information through Apps on your mobile phone. It’s convenient.

A. end up B. look up C. dress up

The top students believe being careful is the ______ to good scores on their exams.

A. secret B. form C.process

It’s reported that Tu Youyou won the Nobel Prize. We ______ her.

A. are surprised at

B. are known for

C. are proud of

The book Expo(书博会) ______ in September this year. It encouraged people to read.

A. is held B. was held C. will be held

---______ can we warn people not to swim here?

---By putting up signs.

A. How B. Why C. Where

---I saw the 3D printer print some cartoon characters at the science fair.

---Sounds fun! I believe such technology will be ______ used in many ways

A.widely B. difficultly C. clearly

Remember not to ask ______ questions, like the age, when you talk with an American.

A. historical   B. lifelong C. private

To    the heavy traffic，1 have to leave so early．

A．increase   B．avoid   C．spread

We chat hongbao is a fun way to express wishes instead of the traditional

A．partner  B．product  C．present