Если можете.
Ex 2. Make up complex sentences by using the right subordinating conjunction
Since / Just as there’s too much work to do, we won’t go on holiday.
I’d better take an umbrella in саse /whether it rains.
Just keep an eye on the baby while / whereas I cook the supper, will you?
Many of the children feel more confident if / though they work in groups.
Although / in order that he hasn’t said anything, he seems to be upset about it.
You must be careful while / unless you wash this delicate silk blouse.
I’d like to find out when / even if the classes begin.
By / as long as the time you receive this letter, I’ll have left for Japan.
At last, after / as long as he had tried three times, he passed his exam.
The manager didn’t offer him the job because / although his appearance was very untidy.
Even if / When there are small children around, it’s better to put breakable ornaments out of their reach.
Unless / Until you hurry, you won’t catch the bus.
I couldn’t resist having another slice of cake in case / even though I was supposed to be losing some weight.
Leave the cake in the oven until / because it turns brown.
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