5. Many advertisements are aimed specifically a________ teenagers, so you have to be careful.

4. The cake t_________ delicious. Would you pass me one more?

3. How do you feel a________ pollution?

2. I want to eat something because I am k_______ of hungry.

1. We should protect e_______ animals.

5. I felt _______(embarrass) when everyone looked at me.

4. I’m considering _____ (study) in Beijing or Shanghai.

3. The students are ______ (confuse) about the ______ (confuse) problem.

2. Sunglasses are used for _____ (keep) out the sun.

1. Here are some things they have learned from ______(scientist ) studies.