—Your colleague is speaking English with fluency. —It's no wonder.She ____ in the UK for a year as a visiting professor.
The soldier raised his gun and calmly __________ it at the enemy commander, fired. 【选项 】
People still lack knowledge about what can be recycled and what cannot, especially when it comes to __________ kitchen garbage. 【选项 】
The first decade in the 21st century __________ the rapid rise of China as a world economic power.
__________ the city centre, we saw a stone statue of about 10 metres in height.
Tom was about to close the window __________ his attention was caught by a bird.