In doing scientific experiments, one must be ________ careful with the instruments．

no more than

more than

not more than

more

________ the boys in our class went to the playground to play basketball．Tom and Jack were in the library．

All

Every one of

None of

Not all

New shoots will come out ________ the roots of the old bamboos when they die．

from

from around

under

above

As he reached ________ front door, Jack saw ________ strange sight, frightened．

the; a

a; the

不填; a

the; the

The new stadium being built for the next Asian Games will be _________ the present one．

as three times big as

three times as big as

as big as three times

as big three times as

When it comes to second hand cars, one has to be as _________ as possible about the source and the condition of them．

cautious

casual

urgent

patient

They _________ have arrived at lunchtime but their flight was delayed．

will

can

must

should

She _________ a smile when she heard her family went to Italy without her．

wore

managed

performed

controlled

_________ himself in carrying out an experiment, he can’t spare time to look after his children．

Occupied

Occupying

Having occupied

Having been occupied

This argument sounds reasonable, but _________ it’s incorrect．

actually

fortunately

naturally

obviously