句型转换（每空1分，满分15分）
The new medicine proved beneficial to the patient's skin problems.
----The new medicine proved to _____ _____ _____to the patient's skin problems.
I have neither brothers nor sisters.That is to say, I'm an only child.
--- I have neither brothers nor sisters—_____ _____ _____, I'm an only child
As a matter of fact, my boss is three years younger than me.
--As a matter of fact, my boss is three years _____ _____ me.
All we could see in front of us was 200 km of nothing but sand.
-- All we could see _____ _____ us was 200 km of nothing but sand.
Li Ming has his faults, but, on the whole, he is a good helper
--Li Ming has his faults, but, _____ _____ _____, he is a good helper.
It is difficult to imagine that he accepted the decision without any hesitation.
---It is hard to imagine _____ _____ the decision without any hesitation.