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Unit 4 Warming up Revision 1. A raft is a small boat ____________________________ _________________. 2. The basic equipment______________ ________is simple. you need that (\which) you can use to paddle down rivers and streams Attributive clause for hiking (that) 4. He is a successful manager in a pany ____________________________________. that (\ which)sends mail all over the world.5. Chuck Noland is a businessman _______________________________________________________________. who (\that) is always so busy that he has little time for his friends 3. There are more than 42 countries ____________________________________. where the majority of the pople speak English. ① Zhang Heng was a famous scientist who made the earliest seismograph in 132. ② Howard Ca