Though great efforts have been      on their study , Annie still can’t make any improvements , which makes her parents greatly ______ .

______ was reported in the local paper, since the carrying out of the performance salary, efficiency in work has ______doubled. 

—What does this modern-day dinosaur look like? —The tongue of this animal can be extended _____ of its body.

It is said that the novel Henry had devoted so many years to______published last week.

His eyes suddenly widened. I knew a good idea must have _________ to him.