threes in the first

threes in the first they went to the theatre in twos and threes. there are some threes in the garden?改为否定句 请问count in threes in two and threes in threes and fours in twos and threes是什么意思 We went to the library in twos and threes,为什么用介词in The students came into the classroom in twos and threes 一句中为 threes class pupils look in of garden the the are three plan with threes and flowers to be planted in the garden,it has t count in twos count in threes是什么意思