He was so____ a key university that he would work until late into the night.
A．curious about B．anxious about C．desperate for D．concerned about
They also agree that it is the burning of more and more fossil fuels that has resulted ____ this increase in carbon dioxide.
A．from B．of C．in D．to
____ late in the morning, Bob turned off the alarm.
A．To sleep B．Sleeping C．Sleep D．Having slept
It is only when the disease has progressed to the AIDS ____ a person begins to look sick.
A．which B．what C．who D．that
The warmth of ____sweater will of course be determined by the sort of ____wool used.
A．the, the B．the, / C．/, the D．/,/
— Can you keep an eye on my bag, Tom? I just want to use the bathroom.
—____. It will be safe with me.
A．Go ahead B．I think so C．Not at all D．You’re welcome
