cau 1 : combine these sentences , using WHICH , WHERE , WHEN : 1 ha noi is the place . i’d like to come to ha noi 2 summer is the time . the weather is very hot then 3 the bed was comfortable . i slept in it last night 4 i never forget the park . we met each other for the first time at this park 5 i do not know the reason . she left school for it 6. we have not decided the day . i’ll go to london on that day 7. our school has a good laboratory . the students practice chemistry in the laboratory 8. our school has a good laboratory . mr john designed it in 9. 7:30 is the time . my plane will arrive then 10 i love my parents’s house . i was born in that house