Cloning plants is straightforward cloning animals is very complicated .

Cloning plants is straightforward           cloning animals is very complicated .

#34234

so that

although

while

as if

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There isn’t such a word ______ I know.

#34797

as soon as

as long as

so long as

so far as

Mom，don’t you think it's OK to play once in a while ____________ it doesn’t affect my studies?

#30096

even if

unless

so that

as long as

________ he comes or not，the result will be the same.

#30446

Even if

Whether

No matter

Although

You will be late ______ you leave immediately.

#79897

unless

until

 The new policy allows a couple to have a second birth _____either is an only child.

#30142

though

unless

until

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