【单选题】
Our teacher recommended that we _____as attentive as possible when we visit the museum.
【单选题】
_____native to North America, corn has now spread all over the world.
【单选题】
Televisions enable us to see things happen almost at the exact moment _____.
①
which they are happening
【单选题】
By the time you graduate, we _____in Australia for one year.
【单选题】
If you want children to work hard you must _____their interests instead of their sense of duty.
【单选题】
Watch out, the boss is disguised _____ your behavior.
【单选题】
Classification is a useful _____to the organization of knowledge in any field.
【单选题】
Although the main characters in the fiction are so true to life, they are certainly _____.
【单选题】
I was to have a trip abroad if _____.
③
my boss won’t have fired me
【单选题】
He made a quick _____from his illness.