1.Microwave ovens are generally more costlier than common ovens. _______

2. It is possible that some old paintings were once bright and more _______
colorful than they are now.

3. There are few electronic applications likely to raise fears regarding _______
future employment opportunities than robots.

4. Most wine from Switzerland is more inferior to wine from France. ______

5. By opening vast areas of un occupied land for residential expansion,
the ominibuses, house railways, commuter trains, and electric trolleys
pulled settled regions outward two to four times as distant from city
centers than they were in the premodern area. _________

1、costlier - costly
此句costly是形容詞，意思是“昂貴的”。它的比較級形式是more costly。costlier是錯誤的形式，須改成costly。

2. bright - brighter

3. likely前加more
此句的意思是：很少有電子應用軟件能夠像機器人那樣引起人們對未來就業機會的擔憂。
此處是 more likely … than 比較結構

4. more - /

有些含有比較意義的形容詞，不能與more, er, than連用的，如：preferable to,superior to=better than, inferior to劣于，prior to=before, second to僅次于, inferior to等。

5. than - as