4. a. Rewrite the following sentences in the active voice (in the imperative mood). (Begin each sentence with the word in brackets). Hand luggage belonging to passengers must please be placed under the seats. (Place) b. Those who require help must remain seated and they will be assisted by the crew. (Remain seated)
At all times, the passengers must remain calm and seated. (Remain calm)
d. When the oxygen masks are released, you should place yours over your mouth and breathe deeply. (Place) C.​

Ron and nick chose to start their own businesses. ron wanted to start an ice cream shop, and nick wanted to launch a television manufacturing company. ron and nick had equal amounts of funds on hand and no government regulations restricting them. months later, however, ron has already set up his business, while nick is still struggling to raise additional funds to build a factory. what was the main factor that affected nick’s business? a. an irrelevant business idea b. low demand for tvs in his country c. high start-up costs d. lack of labor economics