mọi ng giúp e bài giới từ với ạ, e cảm ơn

1.Though gentle ..IN… manner and speech, she was a woman .OF.. firm and independent character

2, You are …UNDER… no obligation to take ..ON.. so much work.3 He turned up ...for... his appointment ..WITH.. the manager at 9am. appointment with somebody

4. There is a bus ……AT… twenty minutes ……TO… the hour (20 phút nữa tròn 1 giờ); for example 1.40, 2.40, 3.40, etc.

5. The police are warning the public to be …ON.. the alert …FOR… suspicious packages.

Be on (the) alert  (for something/somebody)

6, They appeal ..TO.. High Court …AGAINST… the unfair judgment.  appeal to somebody for something

7. He's been sitting …ON..…my letter for months. He's so busy he can't get ……(A)ROUND……… to answering it.

8 …IN..view …OF.… the approaching exam, he's working harder than ever. (In view of st: vs mục tiêu)

9 I classify (phân lọai) the stamps …INTO… categories (mục) …BY… the subject.

10. They can only cure him ..OF… his illness … BY… means of surgery. (phẫu thuật)