1.   Analysts worry that companies will choose to expand elsewhere if it becomes too difficult to find workers here.

2.   A pathogen can create a new way to infect a plant within a few years if it becomes too difficult to find a weak host.

3.   He mentioned it when it had become clear that no drugs or guns would be found.

4.   In Atlanta, finding workers is becoming nearly impossible.

5.   When the miles decrease, finding a cab becomes harder.

6.   Mandatory vehicle insurance was canceled several years ago when it became difficult to find companies to write insurance.

v. + become >>共 689
be 4.74%
have 3.02%
win 1.65%
breathe 1.17%
will 1.10%
testing 1.10%
go 1.10%
lose 1.03%
fighting 1.03%
get 0.89%
find 0.41%
find + v. >>共 94
be 58.52%
out 4.40%
take 3.02%
prove 1.92%
become 1.65%
appear 1.10%
make 0.82%
require 0.82%
cause 0.55%
hold 0.55%
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