The research is so designed that once ________ nothing can be done to change it．

begins

having begun

beginning

begun

Don’t all speak at once!, ________ please．

Each at one time

One by one time

One for each time

One at a time

The Doyle couple put ________ a good supply of meats, eggs, wine and pickles．

down

on

in

away

I can’t wade or swim; can you put me ________?

across

down

on

in

Now as a result of the bad weather, our cows ________ less milk．

produce

make

create

offer

Your idea will indeed increase our production, but it also can ________ unexpected side effects．

make

result from

lead

produce

An artist should ________ beautiful things．

invent

create

make

produce

________ with the size of the whole earth, the biggest ocean does not seem big at all．

Compare

When compare

Comparing

When compared

Finally, we found her house easily with the boy ________ the way．

to lead

led

leading

leads

The traffic in Beijing has been very good and it ________ much better．

gets

got

is getting

has got