Anyone，oncepositiveforH7N9fluvirus，willreceivefreemedicaltreatmentfromourgovernment.A．tobetestedB．beingtestedC．tested
Anyone ， once________positive for H7N9 flu virus ， will receive free medical treatment from our government.
A ． to be tested B ． being tested
C ． tested D ． to test
Anyone ， once________positive for H7N9 flu virus ， will receive free medical treatment from our government.
A ． to be tested B ． being tested
C ． tested D ． to test
Anyone ， once________positive for H7N9 flu virus ， will receive free medical treatment from our government.
Anyone ， once________positive for H7N9 flu virus ， will receive free medical treatment from our government. ， once________positive for H7N9 flu virus ， will receive free medical treatment from our government. once________positive for H7N9 flu virus ， will receive free medical treatment from our government. will receive free medical treatment from our government.A ． to be tested B ． being tested
A ． to be tested B ． being tested ． to be tested B ． being tested to be tested B ． being tested being testedC ． tested D ． to test
C ． tested D ． to test ． tested D ． to test tested D ． to test to test
C
C
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