Teachers should allow their students to study ________ from the start, and it is bound to result in their ability to deal with problems on their own.
John Logie Baird constructed the first color TV in 1928, but it was not until 1938 ______ the first color TV programme was broadcast.
Since his retirement from teaching music in 2001, Mr. Smith ______ a good deal of time painting as an artist.
Lawrence Craven, a doctor from the US, introduced the idea in 1953 _______ aspirin has the potential to reduce the risk of heart attacks.
Keeping on doing good deeds brings us peace of mind, ________ is important for our happiness.
_______ I have never thought of getting a job in such a big company, I’ll have a go at it.