According to research, children whose parents __________ are more likely to have difficulty __________ their studies.
| A．split up ； concentrating on |
| B．broke into ；to focus on |
| C．gave up ；concentration on |
| D．put into ； focusing on |
He is at least as tall as his brother, if not_______ ．
| A．tall | B．taller | C．so tall | D．the taller |
Now we can _________ weather information from a new type of weather satellites．
| A．pick up | B．take up | C．keep up | D．set up |
He was very busy that day，but he seemed_________ when we dropped by．
| A．unbearable | B．skeptical | C．delighted | D．challenging |
1 would like it_______ by credit card，may I?
| A．to pay | B．pay | C．paying | D．paid |
________warmly for his excellent work，the model worker was too _______ to fall asleep．
| A．Praising；excited | B．To praise；exciting |
| C．Praised；exciting | D．Praised；excited |