89.We really ______ the invitation to your party, but my elderly mother lives with us and we don’t like to leave her alone in the evenings.

11.If we teachers believe in education and _______ students’ growth, our labor will eventually pay off.

10.No one can finish all the tasks alone. Don’t ______ to ask for help. We can all benefit from cooperation.

9.The skin on our body is a good _______ to the virus, unless it is broken or cut.

8.Last week I submitted my first project proposal and I was very anxious to know how the department manager would ______ it.

7.Our mutual friend John has got a rare ability to ______ facts and figures.

6.Traffic jams often build up when drivers ______ down to see what happened in a crash.

5.We aim to do better at _______ the limitless power of the sun.

4.The company’s new products are _______ in the countryside.

3.They are working on a new project, which calls for a( ) _______ amount of time and energy.

2.The city officials drew up and _______ a plan to promote creativity through the maker movement.