Preposition + -ing form

1. Prepositions + -ing form.

Use the prepositions below to complete the sentences.

2. Write.

Type in the missing words to complete the sentences. Use the word in brackets.

For example:

Jim is interested (learn) Chinese.
Jim is interested in learning Chinese.

3. Preposition + -ing form.

Complete the second sentence so that it means the same as the first sentence.

For example:

Turn off the lights, and then lock the door.
Before locking the door, turn off the lights.

Select the file, and then open it.
After selecting the file, open it.