— Did you remember to give Mary the money you owed her ?—Yes.I gave it to her _______ I saw her.

— Can I help you with it?— I appreciate your _______, but I can manage it myself.

With a good ______ of both Chinese and English,she had an advantage over the other interviewees.

Every weekend my younger brother will go to help the old man far away my house,for which he often received some            from the old man,such as a pencil and some sugar.

    Eggs, meat, vegetables and other foods can easily be poisoned by microorganisms such as ______.