Allen is good at seizing every opportunity ____ he thinks he can show his best self to others.
A.when B.that C.where D.which
— Were all the villagers inspected for the suspected disease?
— No. ________ only 10 people who were exposed to the animals infected by the virus.
A.There were B.There are C.It were D.It was
—Robert speaking. Could you get me through to Mr. Smith in Room 501?
—I’m sorry, he isn’t here. He ________ this morning.
A.checked in B.dropped in C.checked out D.dropped out
Some institutions have established reading clubs to promote reading, but the effort, though ________, is far from enough.
A.appreciated B.appreciating C.having appreciated D.to appreciate
China’s maternal and infant goods ecommerce platforms ________ heavily and speeding up their steps to expand offline channels.
A.invest B.are investing C.are invested D.have invested
Conservationists __________on setting aside natural reserves for the wild species they are trying to protect during the past decade.
A.focused B.focus C.have focused D.had focused
