Accent, tone, _______ and vocabulary can affect the ability of a language learner to understand or to be understood.
It is widely believed that smoking _________lung cancer.
New iPhone went on sale on Friday with ________ bigger screen and 4G wireless technology, as ________ company seeks to keep its competitiveness(竞争力).
--Excuse me, sir, _______________ --I’d like a cup of coffee and two pieces of bread.
Most people are familiar with the idea that all matter in the universe ________ atoms.
There were no tickets _________ for Friday’s performance so we went to the cinema instead.