Choose the correct alternative.
English use is increasing around the world at a time when more people in the UK are seeking out teachers of other languages.
English use is increased around the world at a time when more people in the UK are seek out teachers of other languages.
English use increased around the world at a time when more people in the UK is seeking out teachers of other languages.
English is used to be increased around the world at a time when more people in the UK is seek out teachers of other languages.