According to practice 3 section 8.4, what were the detectives waiting for?（ ）。
A: Police.
B: Sand.
C: Diamonds.
D: Stones.
A: Police.
B: Sand.
C: Diamonds.
D: Stones.
举一反三
- The detectives were ______ a valuable parcel of diamonds. A: expecting B: waiting C: expecting for D: expecting to
- _were the detectives waiting？ At the airport（） A: Why B: When C: Where D: What
- The plane was late and detectives were waiting at the airport all morning.
- According to practice 4 section 8.4, how often did the beggar come to the street?（ ）。 A: Every other day. B: Every Monday. C: Once a month. D: Once a week.
- What were the men doing according to the police A: They were treating industrial waste. B: They were tanking industrial waste. C: They were tanking chemicals. D: They were using a tank to mix chemicals.