Change the sentences using inversion: 1) He has visited many places recently. 2) If they were at home they would answer the phone call. 3) Though the test was easy he didn't cope with it. 4) He noticed that they were not alone only at the last moment. 5) He spoke very quietly and it irritated the teacher.

The inverted sentences are as follows:

1) He has visited many places recently.

Inverted: So many places has he visited recently.

2) If they were at home, they would answer the phone call.

Inverted: Were they at home, they would answer the phone call.

3) Though the test was easy he didn't cope with it.

Inverted: Though the test was easy, in no way did he cope with it.

4) He noticed that they were not alone only at the last moment.

Inverted: Only at the last moment did he noticed that they were not alone.

5) He spoke very quietly and it irritated the teacher.

Inverted: So quiet was his speech that it irritated the teacher.