56.A war can________(danger) millions of lives.
57.We should know our strength as well as our________(weak).
58. Due to circumstances beyond our control, the________(fulfill) of the contact will be delayed by several weeks.
59. Organizing some challenging outdoor activities can help your employees________(sharp) their abilities.
60. My teacher gave me a letter of________(refer) when I applied for the job.61. She made a favorable________(impress) on me when I first met her.
62. They viewed these plans as an attempt to take a________(profit) market from Britain.
63. There are many sales in the U.S., during which time stores will________(low) their normal prices.
64.He________(respect) moved his hat when he entered the building.
65. There are no tickets left for this evening’s________(perform).