26. Ken’s father ____ at a chicken farm for a long time when he decided to start his own
fifteen years ago.
(A) worked (B) has stay (C) had helped (D) employed
40. All workers applying for technical positions ____ to complete related training in three
months.
(A) are advised (B) has got (C) should (D) have need
42. Because of ____ oil prices and the COVID-19 pandemic, things that people need in
everyday life are becoming more and more expensive.
(A) raising (B) rising (C) difficult (D) extending
51. Studies show females usually surf the Internet for ____ reasons and males just do it for
fun.
(A) practical (B) unthinkable (C) questionable (D) valuable