I was nearly exhausted from preparing my experiment report last night so I took a hot bath to myself.
| A．behave | B．transform | C．present | D．refresh |
_____ or not we had a baby, we couldn’t survive only on my salary.
| A．As | B．Even | C．However | D．Whether |
_____ you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can.
| A．Now that | B．Ever since | C．So that | D．As long as |
_____ he works hard, I don’t mind when he finishes the experiment.
| A．As soon as | B．As well as | C．So far as | D．So long as |
Antarctic _____ we know very little is covered with thick ice all the year round.
| A．which | B．that | C．where | D．about which |
They decided to chase the cow away _____ it did more damage.
| A．unless | B．until | C．before | D．although |