______ that he has no qualifications in business management, Ken plans to gain the necessary skills by taking a part-time course.
Every time ______ they met, they would talk several hours together about the persons and things _______ they remembered in the middle school.
My boss insisted that I _______ the work before ten o’clock tonight.
The country has _______ great changes and become a developed one.
We are often _____ by the doctors to eat more healthy food and take plenty of physical exercise.
We asked the teacher to explain _______.