the three elements of productive forces, namely, the people, the means of production and the subject of labor, the people is that most critical.

We looked forward to _______ at eight in the morning, but he didn’t turn _______ until 9 o’clock..

The news came as quite a shock to us, but he seemed to be_________ surprised

E-mail, as well as telephones, ______ an importantpart in daily communication.

Meyer and his team were the first ______ how the disease spreads from animals to humans