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has been to has come to has been in has arrived in
joined; has been has joined; has been was joined; is joined; was
has been to has come to has been in has gone to
was will be should be has been
joined; has been has joined; has been was joined; is joined; was
has gone to has been to has been in has been for
proves that the epidemic has been spreading very fast over the past eight years implies that the USAID was not very successful in the past eight years shows that the epidemic has spread too fast to be controlled over the past eight years explains that the epidemic has been controlled
has married has married with has been married with has been married to
has has been have have been
joined; has been has joined; has been was joined; is joined; was
Right Wrong Not mentioned
came; has been teaching has been; has been teaching came; have been teaching has gone; have been teaching
has opened has open has been open has been opened
changed; got married changed; has been married has changed; got married has changed; has been married
had driven has been driven has been driving has driven
grows was growing has been growing has grown
has taught was taught had been taught has been taught
leaves; has gone left; has been away leaves; has been away left; has gone
has lived; had prepared has been living; has been preparing lived; has been preparing has been living; has prepared
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