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With the solved problem With the problem solved With the problem solving With the problem to solve
is; is is; are are; is are; are
shows show have shown has shown
until；while till；as as far as; when as long as; after
shows show have shown has shown
shows show have shown has shown
has began has been on has begun began
virus subtypes(子类型) have been found in pigs. A. By far As far as So far Till far
so far；making so far not；to make up to now；made till now not；makes
so far the other night the other days up till now
virus subtypes(子类型) have been found in pigs. A. By far As far as So far Till far
is; is is; are are; is are; are
With the solved problem With this problem being solved With the problem solved With this problem to solve
being solved solving being solving solved
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