Mankind must first of all eat, drink, have shelter and clothing______ it can pursue politi

In determining safe speed，all of the following must be taken into account EXCEPT the （).

___ I’d like to welcome you to the conference.A、All firstB、First of allC、Of all the fir

We must find a flat big enough______.A．for all of us to liveB．for all of us to live inC．to

The first invention of mankind was the wheel. The invention of the wheel is probably the

First of all, plan your toast______（2 words).

_________(63)A.Firstly B.First of all C.At first