He’s a widower who _______ three children.

Your sister seldom cooks meals, ___________?

Richard will look for a job __________.

Tommy is on the way to his friend's birthday party, carrying a gift box _____ colourful paper.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.

A. nervous

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A. switch

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A. grammar

Cho ∆ABC cân tại A, đường cao AD, trực tâm H.

a) Gọi E là điểm đối xứng với H qua D. Chứng minh rằng: ABEC là tứ giác nội tiếp.

b) Tính HD và bán kính đường tròn ngoại tiếp ∆ABC biết HA = 7 cm, HB = 2 cm.