______ speed and comfort, a bicycle can’t be compared with other means of transportation like car and train.
Luckily good things _________ here to save local wildlife.
The earth became so violent that it was not clear_________ the shape would last or not.
__________ she couldn’t understand was _________ fewer and fewer students showed interest in her lessons.
The clever boy made a hole in the wall, ________ he could see what was going on inside the building.
—What sort of house do you want to have? Something big? —Well, it _______ be big—that’s not important. But it _________ have a nice garden—that’s important for me.