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【单选题】
He left home without ______ any message to his parents.

leaving
leave
【单选题】
There was so much noise in the classroom that the teacher couldn’t make himself _______.

heard
hearing
to hear
hear
【单选题】
Without them you will not be able to( ) the tasks

fulfillment
fulfil
fulfilled
fulfilling
【单选题】
There is no use a lot without anything.

to talk, do
talked, doing
talking, being done
talking, doing
【单选题】
Without air, there __________ no living things.

will be
would be
【单选题】
On no account _____ever leave the baby at home alone.

should you
you should
shall you
you shall
【单选题】
A lot of students ____ the campus since July 1.

have left
leave
left
is leaving
【单选题】
The reason I didn’t go to school that day was ____ill.

due to
that I fell
because of falling
because I fell
【单选题】
The scientific quest is grounded in reason and ____ inference from known facts.

logic
practical
magical
logical
【单选题】
Which of the following is the time when students work as a whole class?

When all the students are under the control of the teacher
When students work in pairs on an exercise or a task
When students work in small groups
When students are expected to work on their own at their own speed.