3. If we           (make) adequate preparations,the confer- ence wouldn't have been so successful.

2. Jack is a great talker. It's high time that he           (do) something in- stead of just talking.

1. We           (face) the difficulty together,but why didn't you tell me?

5. 那天我病了，要不然我就參加那次競(jìng)賽了。

I was ill that day.          v .

4. 假如你過(guò)兩天去上海，我現(xiàn)在就可以安排我在那兒的朋友去機(jī)場(chǎng)接你。

If you were to visit Shanghai in two days          

3. 要是這臺(tái)機(jī)器情況良好，我們上次就將它用于實(shí)驗(yàn)了。

If the machine were in good conditions,               

2. 如果那個(gè)男孩今天下午沒(méi)有被救，他的家人現(xiàn)在就不會(huì)如此平靜。

               ，his family would not be in peace now.

1. 如果你昨天告訴他的話，他現(xiàn)在就知道怎么做了。

If you had spoken to him yesterday,                .

7. ―Why didn't you help him?

一I would have,otherwise I didn't have the money.

6. Because of your help,I would not have finished the project in time.