bài 1:
1. Do you think that this machine will work ............. ? (effective)
2. They show no ............ in the picture (intresting)
3. I will come to the party because I accept the .......... (invite)
4. The world's rain forests must be safe from ............. (destroy)
5. The giant panda is an .......... species (danger)
6. Water ................. is necessary for hydropower stations (conserve)
bài 2 :
1. Jess always ..................... glasses when he goes out (wear)
2. My grandparents ............ flowers in the garden when I came in (water)
3. Look! Danny ............. to a newcomer . Where is she from, Jane? (talk)
4. I .................... three different teachers since I started learning English (have )
5. Mrs. Jone is going to .............. all the rubbish ( collection)
6. How about ........... for a picnic this weekend? (go)
7. It was difficult for me to tell the ...................... between the two houses ( different)
8. Smoking is very ................... to our health (harm)
9. She found it ............. difficult to get a job (extreme)
10. The ....................... of the floods this year has been very terrible ( destroy)
11. Ms Abbott .............. home from work when she saw a child fall off the bridge (walk)
12. He ............. for London 2 years ago (leave)
13. Water ................. at 100 degrees Celsius (boil)
14. Can I call you back later ? We ............ breakfast at the moment (have)