Topics: 赶紧 (gǎnjǐn) 经常 (jīngcháng)
Level: Upper Intermediate
Topics: 经常 (jīngcháng) how many
Level: Elementary
Topics: 刚 (gāng) 经常 (jīngcháng)
Topics: probably more and more 经常 (jīngcháng) 一起 (yīqǐ)
Topics: 从来 (cónglái) 经常 (jīngcháng)
Topics: 比较 (bǐjiào) 经常 (jīngcháng) both... and
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