Dùng những từ trong bảng để hoàn thành những câu sau với dạng đúng của động từ:

take; pass; find ; write; know; touch; use ; finish; keep; complet
1. Mr. White didn't have any money, so he decided________a job.

2. The teacher reminded the students_______their assignments in time.

3. My group leader expects me_______ this paper as soon as possible.

4. Our teacher encourages us ______ a dictionary whenever we are unsure of the meaning of a word.

5. Before I went away to college, my mother had reminded me _______her a letter once a week. 
6. Mrs. Snow has warned her young children not ______ the hot stove.

7. The student on the corner pretended_______the answers to the teacher's questions. 
8. Residents are not allowed_______ pets in that apartment building. 
9. All applicants are required ______ the entrance examination. 
10: Ann advised her sisters_______the plane instead of driving to San Francisco.

Giải phương trình: 3sin3x -  \(\sqrt{3}\)cos9x = 1 + 4sin³3x

Giải phương trình: cos2x + \(\sqrt{3}\)cosx + 5sinx =\(\sqrt{3}sin2x+3\)

Giải phương trình: \(\dfrac{3\left(sinx+tanx\right)}{tanx-sinx}-2cosx=2\)

Giải phương trình: (sin2x + cos2x)cosx + 2cos2x - sinx = 0

Giải phương trình: sin⁴x + cos⁴\(\left(x+\dfrac{\pi}{4}\right)\) = \(\dfrac{1}{4}\)