cho em hỏi câu:You should ride your bike carefully, or you may have an accident. ->If you don't ride your bike carefully, you may have an accident. Thêm to sau dont được không ạ? Don't to

1 One/the negative aspect that /tourism/can cause/be/the in crease/ Social problems 2 The more tourists,/ more chance/ the bad behaviors/will occut.

ex1using the words and phrases given

1 One/the negative aspect that /tourism/can cause/be/the in crease/ Social problems

2 The more tourists,/ more chance/ the bad behaviors/will occut.

3 For example./Some Tourists /have their first time/ travel /to another country,/they have/no idea/ the new place/likes price,the trafix ,the crime rate,/the trick/to tourists/get money from them.

4 Someone can sell/a cake / These tourists/a crazy price.It/cost /300.000 VND for just / small cake the tourists/be cheated obiously

5.Moreover, / some bad guys/may take advantage / a crowded. place / pick the pocket of the tourists/then they can easily get/ away/because/the tourists have no idea/who would they/call/report the criminals.

6 In summary,/before/go to another country/tourists should learn something/the new place/like the hotline/the govenment to report oriminals/and/avoid social problems.

IV.Complete the sentences with the passive form of the verbs in brackets. 1. My shirts by my mother when I enter the room. (iron) 2. The police appeared while a young man by two hooligans. (beat) 3. The letter by the secretary at 9.00 yesterday. (write) 4. The trees by the kids at the moment. (water) 5. Look! The big truck by the customs officer. (check) 6. by the police car now. (follow) 7. Paper by the Chinese many year ago. (invent) 8. The conference due to the president's absence yesterday. (not, hold) 9. I a piece of advice by my mother every day. (give) 10. The Internet all over the world. (use) 11. Laura to go out after 10 p.m. (not, allow) 12. They by their teacher every day because of their laziness. (punish) 13. by the doctor yearly? (examine) 14. All the rooms in my house before Tet holiday last month. (decorate) 15. The exam papers by the teacher this morning. (mark)

A = (1/(sqrt(x) - 1) - 1/(sqrt(x) + 1)) * (sqrt(x))/(x - 1)

cứu mik vs