Điền từ còn thiếu vào chỗ trống cho phù hợp :

1) Let's listen _____ the news _____ the radio.

2) Frank is on holiday ______ three weeks.

Rewrite :

1) He started driving 1 month ago.

-> He has ...................................

2) If you don't leave now , we will miss the train.

-> Unless ............................................

Viết lại câu nghĩa ko đổi :

1) You will be late if you don't hurry.

-> Unless ...................................

2) I get to work in thirty minutes.

-> It ..........................................

3) It took Peter three hours to open the doors.

-> Peter spent ................................

4) It's two years since I didn't meet him.

-> I haven't ................................

5) The garage is going to repair the car for us next week.

-> We are going .........................

1) Tính tổng A = 2¹⁰ + 2¹¹ + 2¹² + 2¹³ + ... + 2²⁰¹⁵

2) Tìm số nguyên x, y thỏa mãn : ( 2x + 1 ) ( y - 7 ) = 2014