This is the best way I have thought of _________

This is the best way I have thought of __________ the problem.

#93344

to be solved

solving

to solve

solves

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 The teacher doesn’t permit ________ in class.

#88365

smoke

to smoke

smoking

to have a smoke

------ English has a large vocabulary, hasn’t it?------Yes.____more words and expressions and you will find it easier to read and communicate.

#96695

To know

Knowing

Know

Known

 The thief stole the light,         the stair even darker.

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made

to make

making

and made

 ________ an astronaut into space in 2003, China became the third country to send a woman into space in June, 2012.

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Having first put

To have first put

First putting

Being first put

. Enough attention should be paid to _____ your pronunciation and intonation.

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improve

improving

improved

be improve