Hòa tan hoàn toàn m gem Fe cần dùng 300ml dd CuSO4 1M (vừa đủ)
A) tính khối lượng kết tủa thu được
B) tính khối lượng FeSO4 tạo thành
C) cho NaOH tác dụng vừa đủ với dd FeSO4 trên tính khối lượng kết tủa tạo thành

1.I'm sorry that they don't allow me to travel with them without my parents permission.
----->I wish
2.People believed that the most suitable time to visit Sơn Doong is from February to August.
------> It
3.My brother asked me" Why did you keep studying the whole morning without taking a break?"
-----> My brother asked me
4.This gym is less convenient than the one near my house.
-----> This gym is no

Question 32: Don't forget locking the door before going to bed
                        A                    B                        C          D

Question 31: I was coming home this morning when I was seeing Kate waiting at
                               A                                                             B                    C       D
the bus stop

Ex3: Read the following passage carefully and then choose the best option to fit each numbered blank:
Gilberto Gil is a brazilian singer and guitarist, and one of his country's most (21)_____songwriters. As a young (22) _____ in the 1950s, he was influenced by the style of Joao Gilberto, but he didn't release his first album, Louvacao, (23)_____1967. He travelled in the 1970s, recorded a album in english, (24)_____in 1980, introduced reggae to Brazil when he released his version of Bob Marley's song, 'No woman, no cry.' He has played (25)_____ may musicians, while continuing his career as a solo artist. In all he has produced over 40 albums. His music appeals to people because of its rhythms and melodies but people also admire him for his work in politics and for social causes.
Question 21:   A.talent      B.talenting    C.talented        D.talents
Question 22:   A.music     B. musical     C. musically     D. musician
Question 23:   A. before    B. until          C. after             D. in
Question 24:   A.but          B.so              C.and               D.or
Question 25:   A.for           B. with          C. by                 D. to