The workers' promised wage increase is being ______ while it is examined by the government to see if it is greater than the law allows.

单项选择题As intriguing as these results are, much remains unclear about the impact of low doses of a low doses of alcohol ______ system.

单项选择题Many feared that the continuing insecurity would ______ the chances of elections being held successfully.

单项选择题A lateral move that hurt his pride and blocked his professional progress ______ him to abandon his relatively high profile career.

单项选择题He has impressed his employers considerably and ______ he is soon to be promoted.

单项选择题They have vowed to protect the country's territorial ______ which is one of the bases for the country to develop relationships with other countries.