.____it will do us harm or good remains to be seen.
This is the very toy car ________ which he came here the other day.
I began to fish before memory began, _______ I know I have always fished.
_____ I had done it I knew I had made a mistake.
Elbert Einstein, for ______ life had once been very hard, was successful later in science .
In my opinion, all Mr Tom ______ good to his students in his class at present. He is very strict in their study.