In fact fuels we burn and plant food we eat ________ their chemical energy in the form of heat.
| A．give in | B．give off |
| C．give away | D．give up |
.When he was at school, he ______ early and take a walk before breakfast.
a. will rise b. shall rise c. should rise d. would rise
If it is fine tomorrow, we ______ a football match.
a. have b. will have c. has d. shall has
_______ today, he would get there by Friday.
| A．Would have left | B．Was he leaving |
| C．Were he to leave | D．If he leaves |
. If my lawyer _________ here last Saturday, he _______ me from going.
| A．had been; would have prevented |
| B．had been; would prevent |
| C．were; would prevent |
| D．were; would have prevented |
. If he ________, he _________ that food.
| A．was warned; would not take |
| B．had been warned; would not have taken |
| C．would be warned; had not taken |
| D．would have been warned; had not taken |