The girl arranged to have piano les-sons at the training centre with her sister __________ she would stay for an hour.
The best times to visit Shangri-la are spring and autumn ___ the temperature is at its mildest.
You have to wear a helmet and a life jacket for protection, just ___ you fall into the water.A. in case C. unless C. though D. as
Since we ____ for almost two weeks, I’ll need to buy a large backpack in advance to carry my supplies of food and water.
Below ____ an article about advertisements ____ by a student for her English project.
_____ an ad does not lie, it does not mean it is altogether innocent.