. –I hear Alice was badly injured in the accident and sent to hospital. --_____________, we should go and see her immediately.
. From this simple concept ________ that has caused a great change in farming.
. ________ when she started complaining.
. An awful accident ________, however, occur on the express the other day.
. Was it ________ your son won the first prize last month that please you?
强调、倒装与省略(句). It was ________ he studied that he managed to receive a doctor’s degree.