1£®They set up a scientific organization ________ (explore) the unknown world.

2£®Your art skills are excellent, which leaves me a deep ________ (impress)£®

3£®________ (Nation) Day saw people singing and dancing happily in the street.

4£®The party is not an important one, so you can just be dressed in ________ (formal) clothes.

5£®This project was designed ________ (help) the students in need.

6£®Parents are usually anxious ________ the children when they don't come back home from school.

7£®I find it hard to concentrate ________ my studies with some people having small talks around me.

8£®I felt very ________ (annoy)to find that they hadn't waited for me.

9£®I have the ________ (confident) that you will have a good time here.

10£®________ last the firefighters put out the fire in the supermarket, which broke out at ten this morning.