Sử dụng câu lệnh lặp để viết chương trình tính tổng dãy số:

A=1+1/3+1/5+...+1/(2n+1)

Viết lại các câu sau sao cho nghĩa không thay đổi so với ban đầu, bắt đầu bằng từ gợi ý.

1. “What’s your favourite food?” asked Tom.

-> Tom asked…………………………………………………………..

2. This book is not as expensive as that one.

-> That book………………………………………………………….

3. My cousin often visited me when he lived in Ha Noi.

-> My cousin used ………………………………………………………

4. I’ve been working for this factory for five years.

-> I started………………………………………………………………..

5. The coffee is so hot that I can’t drink it.

-> It is……………………………………………………………………..

Chọn một đáp án trong số A, B, C hoặc D điền vào mỗi chỗ trống để hoàn thành đoạn văn sau.

Coronavirus disease 2019 (COVID-19), which causes serious (36)............ illness such as pneumonia and lung failure, was first reported in Wuhan, the capital of Hubei, China. The etiological agent of COVID-19 has been confirmed as a novel coronavirus, now known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), (37) ................ is most likely originated from zoonotic coronaviruses, (38).............. SARS-CoV, which emerged in 2002. Within a few months of the first report, SARS-CoV-2 had spread across China and worldwide, reaching a pandemic level. As COVID-19 has (39).............. enormous human casualties and serious economic loss posing global threat, an understanding of the ongoing situation and the development of strategies to contain the virus's spread are urgently needed. Currently, various diagnostic kits to test for COVID-19 are available and several repurposing therapeutics for COVID-19 have shown to be clinically effective.(40) ......... , global institutions and companies have begun to develop vaccines for the prevention of COVID-19. Here, we review the current status of epidemiology, diagnosis, treatment, and vaccine development for COVID-19.

Question 1. A. respiratory B. epidemic C. isolated D. infectious

Question 2. A. where B. which C. that D. whose

Question 3. A. like B. the C. with D. as

Question 4. A. spread B. made C. cause D. triggered

Question 5. A. Therefore B. However C .In addition D. Since

Chọn một từ đúng trong ngoặc để hoàn thành mỗi sau.

1. He drives so ______that he has never had any accidents. (CARE)

2. He is probably the most ______ tennis player of all time. (SUCCEED)

3. He is a(n) ………………………….. person who directly says what he thinks. (SPEAK)

4. There are some ______ between British English and American English. (DIFFER)

5. You look rather ……………………. Are you worried about something? (OCCUPY)

Cho dạng đúng của các từ trong ngoặc để hoàn thành các câu sau.

1. Miss Young remembers (see) her keys on the table yesterday.

2. Peter (not come) ______to the show on time yesterday because of the rain.

3. My father often (finish) ______working at 5.00 P.M.

4. What you (do) ______ when the door bell rang last night?

5. Le Na (take) ______ many trips to Ho Chi Minh city since 2015.

This filmstrip __________ the daily routines of a typical Vietnamese family.

A. reflects B. accepts C. obliges D. sprays