The director recommended that she ________ (study) more English before going abroad.
study
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Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.
Ihavebeenstudyinghereforfouryears,bynextsummerI________.
Thisdiploma(毕业文凭)________thatyouhavecompletedhighschool.