Mr. Li_____a secretary for five years in the company, and now he is the general manager of it.
They also agree that it is the burning of more and more fossil fuels that has resulted ____ this increase in carbon dioxide.
____ late in the morning, Bob turned off the alarm.
It is only when the disease has progressed to the AIDS ____ a person begins to look sick.
The warmth of ____sweater will of course be determined by the sort of ____wool used.
— Can you keep an eye on my bag, Tom? I just want to use the bathroom. —____. It will be safe with me.