The birds quickly able to see the sky.
The birds will quickly be able to see the sky.
Answer:
a singular verb is needed when the parts of the compound subject as thought of as one item with the sentence of the compound.
Answer:
When these two prepositions are followed by the definite articles le and les, a contraction needs to be formed. (Note: There's no contraction with à or de plus la or l': à la, à l', de la, de l'.) There's no contraction with laquelle: à laquelle, de laquelle.
Explanation:
B