用所给动词的适当形式填空~~~~好心人帮帮忙用所给动词的适当形式填空1.Hedoesnot(know)verymuchaboutplants.2.Five(multiply)byfiveistwenty-five.3.Electricityis(vis

Question

用所给动词的适当形式填空~~~~好心人帮帮忙
用所给动词的适当形式填空
1. He does not _____________ ( know ) very much about plants .
2. Five __________ ( multiply ) by five is twenty - five .
3. Electricity is ___________ ( visible ) . So we must be careful with it .
4. Students should talk to their teachers ____________( polite ).
5. What are the cables ______________ ( connect ) to ?
6. Nobody has ever ___________ ( be ) to that place .
7. Maths is __________ ( much , difficult ) than History .
8. That is not a bad _____________ ( explain ) .
9. Starting a fire indoors is very _____________ ( danger ) .
10. In the past , many people had ________( serve ) to clean their houses and cook for them .
11. You will look ______ ( fool ) if you don't try it .
12. The water ___________ ( flow ) from mountain streams into the river .

Answer 1

1 know
2 multiplyed
3 visible
4 politely
5 connect
6 been
7 much difficult
8 explain
9 dangerous
10serveral
11foolishi
12flowed