【C7】A．SinceB．BeforeC．AsD．If

【C2】A．SinceB．ForC．AsD．In

A．SinceB．AlthoughC．HoweverD．Only if

【C7】A．howeverB．thoughC．asD．when

You’ll have more chances of promotion ______ you work hard.A、sinceB、whileC、asD、once

【C2】A．sinceB．ifC．asD．while

【C7】A．meanwhileB．butC．asD．while