I’m sorry that I can’t help _____ trees because I am busy with the homework.
| A．to plant | B．planting | C．planted | D．plants |
156. As is known to all, hard work will _____ in time.
| A．pay out | B．pay back | C．pay up | D．pay off |
157. The journey that _____ change Toby’s life started in July that year.
| A．would | B．was going to | C．was about to | D．was to |
158. It is said in the book that Thomas Edison _____ the world leading inventor for about sixty years.
| A．would be | B．has been | C．was | D．had been |
159. The wages ______ him will be paid tomorrow.
| A．due to | B．because of | C．thanks to | D．according to |
160. I don’t really work here; I ______ until the new secretary arrives.
| A．just help out | B．have just helped out |
| C．am just helping out | D．will just help out |