—What should we pay more attention to if we go north in winter, Mum?—Nothing much. Take warm clothes ______ the weather is cold.
—Can you help me with this question, Tom? —Sorry, it is beyond my________.
Air is________and of no smell but we can feel its motion when there is a wind.
Mountain climbing must be very tiring, ________,you might feel sick with the air getting thinner.
Mark’s fluency in English gave him a big advantage________the other applicants for the job.
In China, as we all know, brides are often dressed in red as it is a________of good fortune.