It remains to be seen_______ the newly formed committee’s policy can be put into practice.

Mike and Jack _______a new teacher.

What has he been doing _________? I haven’t seen him much recently

─ I called you yesterday evening, but there was no answer.─ Oh, I am sorry. I dinner at my friend’s home .

Mr. Black used to be busy. But now he’s retired and , so he has plenty of time to exer cise.